1. The document discusses the unification of classical and quantum mechanics through restricting the quantum action to certain two-dimensional surfaces in Hilbert space, such as coherent states.
2. Both canonical and affine quantization are considered. Affine quantization uses affine variables like D and Q which are self-adjoint for certain domains, resolving singularities.
3. Two toy models are examined to illustrate how affine quantum corrections can remove singularities compared to canonical corrections. The affine quantization approach provides a unified description of classical and quantum mechanics.
The document discusses quiescent steady state (DC) analysis using the Newton-Raphson method. It begins by introducing DC analysis and defining the goal as solving the system's differential algebraic equations (DAEs) under the assumption of no time variation. It then describes the Newton-Raphson method as an iterative numerical technique for solving nonlinear systems of equations. The method computes the Jacobian matrix at each iteration to determine the update to the state vector that will converge to a solution.
Necessary and Sufficient Conditions for Oscillations of Neutral Delay Differe...inventionjournals
In this paper, we discuss the oscillatory behavior of all solutions of the first order neutral delay difference equations with several positive and negative coefficients ( ) ( ) ( ) ( ) 0 , i i j j k k I J K x n p x n r x n q x n , o n n (*) where I, J and K are initial segments of natural numbers, pi , rj , qk are positive numbers, i , j are positive integers and k is a nonnegative integer for iI, jJ and kK. We establish a necessary and sufficient conditions for the oscillation of all solutions of (*) is that its characteristic equation ( 1) 1 0 j i k i j k I J K p r q has no positive roots . AMS Subject Classifications : 39A10, 39A12.
The document discusses reaction mechanisms and key concepts related to determining reaction mechanisms from experimental data. It provides examples of proposed mechanisms for different reactions and checks if the proposed mechanisms are correct by verifying that each step adds up to the overall balanced equation, each step involves likely uni- or bimolecular collisions, and the slow step matches the experimental rate law. Key terms discussed include molecularity, intermediates, transition states, and rate determining steps.
1. The document discusses global gravitational anomalies and transport coefficients arising from anomalies in quantum field theories.
2. It summarizes previous work relating anomalies to transport, and notes discrepancies for theories with chiral gravitinos.
3. The main focus is on using a global anomaly matching approach and constructing effective actions to understand the relationship between gravitational anomalies and transport coefficients for various theories in different dimensions, including theories with Weyl fermions and chiral gravitinos in d=2.
This document provides an outline for lessons on the topic of chemical equilibrium. It includes:
1) Four lessons that cover investigating equilibrium reactions, determining equilibrium constants (Kc), using the ICE method to solve equilibrium problems, and the relationship between Gibbs free energy (ΔG) and equilibrium.
2) Details of activities and assessments at various levels for each lesson, including determining Kc values, using ICE to find equilibrium concentrations, defining Gibbs free energy, and relating ΔG to Kc.
3) Examples of ICE questions to work through in class covering determining Kc from concentrations, finding concentrations from Kc, and cases where Kc is very small.
4) A discussion of
This document contains sample questions and answers related to Chapter 4 - Chemical Kinetics from the NCERT Class XII Chemistry textbook. It includes 10 multiple choice questions about rate of reaction, order of reaction, rate constants, effect of temperature and concentration on rate, pseudo-first order kinetics, and determining the order of a reaction based on initial rate data. The questions cover concepts such as rate laws, rate equations, integrated rate laws, half-life of reactions, activation energy, Arrhenius equation and their applications to calculate rates, concentrations, times, constants and orders of reactions.
Rate of reaction,Order of Reaction,Molecularity of Reaction,Zero Order Reactions,First Order Reactions, Half life of reactuion ,Sequential Reactions,Arrhenius Equation,Temperature Coefficient,Collision Theory of Reaction Rate,Radioactivity
This document discusses the properties and design considerations of continuously stirred tank reactors (CSTRs), also known as back-mixed reactors. It outlines key characteristics of CSTRs such as perfect mixing, uniform conditions throughout the reactor, and identical properties at the inlet and outlet. Advantages include low cost and easy temperature control. Disadvantages are lower reaction rates due to diluted reactant concentrations compared to the inlet. Mass and energy balances are derived and used to determine the reactor volume required for a given conversion based on kinetic data and operating conditions. Examples are provided to demonstrate solving for reactor size and temperature based on specified conversions.
The document discusses quiescent steady state (DC) analysis using the Newton-Raphson method. It begins by introducing DC analysis and defining the goal as solving the system's differential algebraic equations (DAEs) under the assumption of no time variation. It then describes the Newton-Raphson method as an iterative numerical technique for solving nonlinear systems of equations. The method computes the Jacobian matrix at each iteration to determine the update to the state vector that will converge to a solution.
Necessary and Sufficient Conditions for Oscillations of Neutral Delay Differe...inventionjournals
In this paper, we discuss the oscillatory behavior of all solutions of the first order neutral delay difference equations with several positive and negative coefficients ( ) ( ) ( ) ( ) 0 , i i j j k k I J K x n p x n r x n q x n , o n n (*) where I, J and K are initial segments of natural numbers, pi , rj , qk are positive numbers, i , j are positive integers and k is a nonnegative integer for iI, jJ and kK. We establish a necessary and sufficient conditions for the oscillation of all solutions of (*) is that its characteristic equation ( 1) 1 0 j i k i j k I J K p r q has no positive roots . AMS Subject Classifications : 39A10, 39A12.
The document discusses reaction mechanisms and key concepts related to determining reaction mechanisms from experimental data. It provides examples of proposed mechanisms for different reactions and checks if the proposed mechanisms are correct by verifying that each step adds up to the overall balanced equation, each step involves likely uni- or bimolecular collisions, and the slow step matches the experimental rate law. Key terms discussed include molecularity, intermediates, transition states, and rate determining steps.
1. The document discusses global gravitational anomalies and transport coefficients arising from anomalies in quantum field theories.
2. It summarizes previous work relating anomalies to transport, and notes discrepancies for theories with chiral gravitinos.
3. The main focus is on using a global anomaly matching approach and constructing effective actions to understand the relationship between gravitational anomalies and transport coefficients for various theories in different dimensions, including theories with Weyl fermions and chiral gravitinos in d=2.
This document provides an outline for lessons on the topic of chemical equilibrium. It includes:
1) Four lessons that cover investigating equilibrium reactions, determining equilibrium constants (Kc), using the ICE method to solve equilibrium problems, and the relationship between Gibbs free energy (ΔG) and equilibrium.
2) Details of activities and assessments at various levels for each lesson, including determining Kc values, using ICE to find equilibrium concentrations, defining Gibbs free energy, and relating ΔG to Kc.
3) Examples of ICE questions to work through in class covering determining Kc from concentrations, finding concentrations from Kc, and cases where Kc is very small.
4) A discussion of
This document contains sample questions and answers related to Chapter 4 - Chemical Kinetics from the NCERT Class XII Chemistry textbook. It includes 10 multiple choice questions about rate of reaction, order of reaction, rate constants, effect of temperature and concentration on rate, pseudo-first order kinetics, and determining the order of a reaction based on initial rate data. The questions cover concepts such as rate laws, rate equations, integrated rate laws, half-life of reactions, activation energy, Arrhenius equation and their applications to calculate rates, concentrations, times, constants and orders of reactions.
Rate of reaction,Order of Reaction,Molecularity of Reaction,Zero Order Reactions,First Order Reactions, Half life of reactuion ,Sequential Reactions,Arrhenius Equation,Temperature Coefficient,Collision Theory of Reaction Rate,Radioactivity
This document discusses the properties and design considerations of continuously stirred tank reactors (CSTRs), also known as back-mixed reactors. It outlines key characteristics of CSTRs such as perfect mixing, uniform conditions throughout the reactor, and identical properties at the inlet and outlet. Advantages include low cost and easy temperature control. Disadvantages are lower reaction rates due to diluted reactant concentrations compared to the inlet. Mass and energy balances are derived and used to determine the reactor volume required for a given conversion based on kinetic data and operating conditions. Examples are provided to demonstrate solving for reactor size and temperature based on specified conversions.
a detailed description of the chapter chemical kinetics (physical chemistry) including different problems by Dr. Satyabrata Si from KIIT school of biotechnology
The document provides a tutorial on reaction mechanisms, rate determining steps, order of reactions, and key concepts like molecularity, intermediates, and transition states. It discusses how to propose a reaction mechanism based on the overall stoichiometry and experimentally determined rate law. The criteria for a proposed mechanism are that each step must add up to the overall balanced equation, the steps must be reasonable involving unimolecular or bimolecular collisions, and the slow step must match the experimental rate law. Several examples of mechanisms are provided and checked against these criteria.
The Material Balance for Chemical ReactorsMagnusMG
This document discusses material balances for chemical reactors. It begins by presenting the general mole balance equation, which states that the rate of accumulation of a chemical component in a reactor volume equals the rate of inflow minus the rate of outflow, plus any generation of that component via chemical reactions.
The document then examines several examples of applying this general balance to specific reaction kinetics, including first-order irreversible and reversible reactions, second-order reactions, and nth-order reactions. It also discusses reactions that exhibit inhibition and series reactions involving multiple steps. Analytical solutions are derived for the concentration profiles of chemical components in batch reactors under these different kinetic models.
This document provides an introduction to gauge theory and quantum electrodynamics (QED) for beginners. It discusses several key points:
1) Gauge transformations describe physically equivalent vector potentials in electromagnetism. This leads to the idea of gauge freedom and gauge fixing.
2) Quantum field theory incorporates different fields that correspond to different particles, such as photons and electrons.
3) The QED Lagrangian can be derived by demanding local U(1) gauge symmetry of the Dirac Lagrangian for electrons. This necessitates introducing the photon field and its coupling to electrons.
4) QED has been very successful in explaining precision experimental results through perturbative calculations using its Feynman rules.
This document provides an overview of computational fluid dynamics (CFD) analysis. It discusses the basics of CFD, including its history, concepts, processes, governing equations, examples, applications, and sources of errors. The document was presented by Chaitanya Vudutha, Parimal Nilangekar, Ravindranath Gouni, and Satish Kumar Boppana to Albert Koether. It contains 28 pages covering topics such as laminar and turbulent flow, Newtonian and non-Newtonian fluids, discretization methods, the CFD process, and the Navier-Stokes equations. Applications of CFD include industries like aerospace, automotive, power generation, and meteorology.
This document provides an overview of the physics topics covered in JEE/MHCET 2014 for classes 11 and 12. It lists the main topics covered in each class, including physical world and measurement, kinematics, laws of motion, etc. for class 11 and electrostatics, current electricity, magnetic effects of current, etc. for class 12. It notes that the exam format and marking scheme remain unchanged, with 90 total questions across physics, chemistry and math, and each correct answer earning 4 marks while incorrect answers lose 1 mark. It provides some sample questions and worked solutions. Finally, it offers advice on exam preparation, including identifying theoretical vs numerical chapters, taking practice tests, choosing a good coaching institute, and recommended study
IB Chemistry Order Reaction, Rate Law and Half lifeLawrence kok
This document provides a tutorial on chemical reaction rates and kinetics concepts including:
- Rate laws and how reaction order is determined experimentally using initial rates or concentration vs. time methods
- Examples of determining the order of reactions with respect to various reactants by varying their concentrations while keeping others fixed
- Graphical representations of zero, first, and second-order concentration profiles over time
- Calculating rate constants from initial rate data and rate laws
- Using half-life to determine first-order behavior with respect to a reactant
This document describes two algorithms for calculating ideal solution chemical equilibrium in multiphase systems. Both algorithms utilize a duality transformation of the Gibbs energy function to formulate the problem. The Lagrange-Newton method finds a stationary point of the Lagrangian using Newton's method. The multiplier penalty method replaces the constrained optimization with sequential unconstrained optimizations. Both methods were tested on a system with 10 gaseous compounds and up to 6 solid phases, and were able to reliably calculate the phase equilibria over a range of pressures.
The document contains questions from various subjects including chemistry, English, physics, and mathematics. Some of the questions are about half-life methods, properties of CO2 and aluminum hydride, effects of changing pressure on gases, composition of aqua regia, lanthanide contraction, oxidation states, properties of group 4A elements, transition elements, collisions, orbital velocities of satellites, pressure in pipes, circuits, transistors, lasers, and mathematical concepts such as averages, functions, logarithms, and probabilities.
This document discusses the Kuramoto-Sivashinsky equation (KSE), a partial differential equation that arises in fluid dynamics and other fields. The KSE describes chaotic and complex behavior even though it is one of the simplest equations exhibiting such properties. It serves as a link between infinite-dimensional PDE models and finite-dimensional dynamical systems. The document focuses on analyzing solutions to the KSE in various settings like different domain dimensions and parameter regimes. It also discusses bounding the size of solutions and properties like the existence of a global attractor.
In this talk I will discuss different approximations in DFT: pseduo-potentials, exchange correlation functions.
The presentation can be downloaded here:
http://www.attaccalite.com/wp-content/uploads/2022/03/dft_approximations.odp
MetiTarski: An Automatic Prover for Real-Valued Special FunctionsLawrence Paulson
This document describes MetiTarski, an automatic prover for statements involving special functions like sin, cos, ln, and exp. It combines the Metis resolution theorem prover with the QEPCAD decision procedure for real closed fields. MetiTarski works by replacing functions with rational function upper or lower bounds, reducing problems to decidable first-order logic over real numbers. It implements techniques like algebraic literal deletion, normalization, and dividing out products to guide the proof search. The system has proved several problems from applications like hybrid systems and has some limitations but shows promise in combining deduction with decision procedures.
The document summarizes the 1988 paper "Ramanujan Graphs" by Lubotzky, Phillips, and Sarnak, which constructed the first verified sequence of Ramanujan graphs with fixed degree k and arbitrarily large order. The paper establishes:
1) A multiplicative group Λ of integer quaternions with norm pk that factors uniquely.
2) A homomorphism from Λ to PGL(2,Zq) or PSL(2,Zq) that maps the Cayley graph of Λ isomorphically onto a Cayley graph Xp,q of the linear group.
3) Using deep number theory results on representations of integers as sums of squares,
He laplace method for special nonlinear partial differential equationsAlexander Decker
This document presents the He-Laplace method for solving nonlinear partial differential equations. The method combines Laplace transforms, homotopy perturbation method, and He's polynomials. It is shown that the He-Laplace method can easily handle nonlinear terms through the use of He's polynomials and provides better results than traditional methods. An example demonstrates the application of the He-Laplace method to solve a nonlinear parabolic-hyperbolic partial differential equation.
The paper discusses using renormalization group theory to understand critical phenomena in ferromagnets. It casts the Kadanoff scaling theory for the Ising model in differential form, with the resulting equations being an example of the renormalization group differential equations. It is shown that the usual scaling laws arise naturally from the equations if the coefficients are analytic at the critical point. A generalization involving an "irrelevant" variable is also considered, where the scaling laws only result if the solution asymptotically approaches a fixed point.
Statistical approach to quantum field theorySpringer
- The document discusses path integral formulations in quantum and statistical mechanics. It introduces Feynman's path integral approach, which sums over all possible quantum mechanical paths between two points, in contrast to matrix and wave mechanics formulations.
- It derives the Feynman-Kac formula, which provides a path integral representation for the quantum mechanical propagator through an application of Trotter's theorem. This sums over all broken-line paths between the initial and final points.
- It also discusses Kac's formula, which applies to positive operators and is used in the Euclidean formulation of quantum mechanics and statistical physics.
The Analytical Nature of the Greens Function in the Vicinity of a Simple Poleijtsrd
It is known that the Green function of a boundary value problem is a meromorphic function of a spectral parameter. When the boundary conditions contain integro differential terms, then the meromorphism of the Greens function of such a problem can also be proved. In this case, it is possible to write out the structure of the residue at the singular points of the Greens function of the boundary value problem with integro differential perturbations. An analysis of the structure of the residue allows us to state that the corresponding functions of the original operator are sufficiently smooth functions. Surprisingly, the adjoint operator can have non smooth eigenfunctions. The degree of non smoothness of the eigenfunction of the adjoint operator to an operator with integro differential boundary conditions is clarified. It is indicated that even those conjugations to multipoint boundary value problems have non smooth eigenfunctions. Ghulam Hazrat Aimal Rasa "The Analytical Nature of the Green's Function in the Vicinity of a Simple Pole" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33696.pdf Paper Url: https://www.ijtsrd.com/mathemetics/applied-mathamatics/33696/the-analytical-nature-of-the-greens-function-in-the-vicinity-of-a-simple-pole/ghulam-hazrat-aimal-rasa
The document discusses key concepts in Laplace transforms including:
1) The Laplace transform is defined as an integral transform that transforms a function of time into a function of a complex variable, simplifying analysis of differential equations.
2) Important properties include the Laplace transforms of derivatives and integrals, which allow transforming differential equations into algebraic equations.
3) The existence theorem guarantees a unique solution to initial value problems under certain conditions on the function.
Dynamical Systems Methods in Early-Universe CosmologiesIkjyot Singh Kohli
The document discusses applying dynamical systems methods to develop models of the early universe. Specifically, it discusses:
1. Applying these methods to the Einstein field equations to obtain cosmological models that are spatially homogeneous but anisotropic.
2. Describing the process of analyzing the dynamics of these models, which involves identifying invariant sets, equilibrium points, monotone functions, and bifurcations in the parameter space.
3. The importance of numerical methods in understanding the global behavior of these systems, since analytical methods are often limited to local analysis near equilibrium points.
The document discusses recursive definitions of sequences, functions, sets, and strings. It provides examples of recursively defining the Fibonacci sequence, factorial function, set of prices using quarters and dimes, and set of binary numbers. It also discusses recursively defining the length, empty string, concatenation, and reversal of strings.
a detailed description of the chapter chemical kinetics (physical chemistry) including different problems by Dr. Satyabrata Si from KIIT school of biotechnology
The document provides a tutorial on reaction mechanisms, rate determining steps, order of reactions, and key concepts like molecularity, intermediates, and transition states. It discusses how to propose a reaction mechanism based on the overall stoichiometry and experimentally determined rate law. The criteria for a proposed mechanism are that each step must add up to the overall balanced equation, the steps must be reasonable involving unimolecular or bimolecular collisions, and the slow step must match the experimental rate law. Several examples of mechanisms are provided and checked against these criteria.
The Material Balance for Chemical ReactorsMagnusMG
This document discusses material balances for chemical reactors. It begins by presenting the general mole balance equation, which states that the rate of accumulation of a chemical component in a reactor volume equals the rate of inflow minus the rate of outflow, plus any generation of that component via chemical reactions.
The document then examines several examples of applying this general balance to specific reaction kinetics, including first-order irreversible and reversible reactions, second-order reactions, and nth-order reactions. It also discusses reactions that exhibit inhibition and series reactions involving multiple steps. Analytical solutions are derived for the concentration profiles of chemical components in batch reactors under these different kinetic models.
This document provides an introduction to gauge theory and quantum electrodynamics (QED) for beginners. It discusses several key points:
1) Gauge transformations describe physically equivalent vector potentials in electromagnetism. This leads to the idea of gauge freedom and gauge fixing.
2) Quantum field theory incorporates different fields that correspond to different particles, such as photons and electrons.
3) The QED Lagrangian can be derived by demanding local U(1) gauge symmetry of the Dirac Lagrangian for electrons. This necessitates introducing the photon field and its coupling to electrons.
4) QED has been very successful in explaining precision experimental results through perturbative calculations using its Feynman rules.
This document provides an overview of computational fluid dynamics (CFD) analysis. It discusses the basics of CFD, including its history, concepts, processes, governing equations, examples, applications, and sources of errors. The document was presented by Chaitanya Vudutha, Parimal Nilangekar, Ravindranath Gouni, and Satish Kumar Boppana to Albert Koether. It contains 28 pages covering topics such as laminar and turbulent flow, Newtonian and non-Newtonian fluids, discretization methods, the CFD process, and the Navier-Stokes equations. Applications of CFD include industries like aerospace, automotive, power generation, and meteorology.
This document provides an overview of the physics topics covered in JEE/MHCET 2014 for classes 11 and 12. It lists the main topics covered in each class, including physical world and measurement, kinematics, laws of motion, etc. for class 11 and electrostatics, current electricity, magnetic effects of current, etc. for class 12. It notes that the exam format and marking scheme remain unchanged, with 90 total questions across physics, chemistry and math, and each correct answer earning 4 marks while incorrect answers lose 1 mark. It provides some sample questions and worked solutions. Finally, it offers advice on exam preparation, including identifying theoretical vs numerical chapters, taking practice tests, choosing a good coaching institute, and recommended study
IB Chemistry Order Reaction, Rate Law and Half lifeLawrence kok
This document provides a tutorial on chemical reaction rates and kinetics concepts including:
- Rate laws and how reaction order is determined experimentally using initial rates or concentration vs. time methods
- Examples of determining the order of reactions with respect to various reactants by varying their concentrations while keeping others fixed
- Graphical representations of zero, first, and second-order concentration profiles over time
- Calculating rate constants from initial rate data and rate laws
- Using half-life to determine first-order behavior with respect to a reactant
This document describes two algorithms for calculating ideal solution chemical equilibrium in multiphase systems. Both algorithms utilize a duality transformation of the Gibbs energy function to formulate the problem. The Lagrange-Newton method finds a stationary point of the Lagrangian using Newton's method. The multiplier penalty method replaces the constrained optimization with sequential unconstrained optimizations. Both methods were tested on a system with 10 gaseous compounds and up to 6 solid phases, and were able to reliably calculate the phase equilibria over a range of pressures.
The document contains questions from various subjects including chemistry, English, physics, and mathematics. Some of the questions are about half-life methods, properties of CO2 and aluminum hydride, effects of changing pressure on gases, composition of aqua regia, lanthanide contraction, oxidation states, properties of group 4A elements, transition elements, collisions, orbital velocities of satellites, pressure in pipes, circuits, transistors, lasers, and mathematical concepts such as averages, functions, logarithms, and probabilities.
This document discusses the Kuramoto-Sivashinsky equation (KSE), a partial differential equation that arises in fluid dynamics and other fields. The KSE describes chaotic and complex behavior even though it is one of the simplest equations exhibiting such properties. It serves as a link between infinite-dimensional PDE models and finite-dimensional dynamical systems. The document focuses on analyzing solutions to the KSE in various settings like different domain dimensions and parameter regimes. It also discusses bounding the size of solutions and properties like the existence of a global attractor.
In this talk I will discuss different approximations in DFT: pseduo-potentials, exchange correlation functions.
The presentation can be downloaded here:
http://www.attaccalite.com/wp-content/uploads/2022/03/dft_approximations.odp
MetiTarski: An Automatic Prover for Real-Valued Special FunctionsLawrence Paulson
This document describes MetiTarski, an automatic prover for statements involving special functions like sin, cos, ln, and exp. It combines the Metis resolution theorem prover with the QEPCAD decision procedure for real closed fields. MetiTarski works by replacing functions with rational function upper or lower bounds, reducing problems to decidable first-order logic over real numbers. It implements techniques like algebraic literal deletion, normalization, and dividing out products to guide the proof search. The system has proved several problems from applications like hybrid systems and has some limitations but shows promise in combining deduction with decision procedures.
The document summarizes the 1988 paper "Ramanujan Graphs" by Lubotzky, Phillips, and Sarnak, which constructed the first verified sequence of Ramanujan graphs with fixed degree k and arbitrarily large order. The paper establishes:
1) A multiplicative group Λ of integer quaternions with norm pk that factors uniquely.
2) A homomorphism from Λ to PGL(2,Zq) or PSL(2,Zq) that maps the Cayley graph of Λ isomorphically onto a Cayley graph Xp,q of the linear group.
3) Using deep number theory results on representations of integers as sums of squares,
He laplace method for special nonlinear partial differential equationsAlexander Decker
This document presents the He-Laplace method for solving nonlinear partial differential equations. The method combines Laplace transforms, homotopy perturbation method, and He's polynomials. It is shown that the He-Laplace method can easily handle nonlinear terms through the use of He's polynomials and provides better results than traditional methods. An example demonstrates the application of the He-Laplace method to solve a nonlinear parabolic-hyperbolic partial differential equation.
The paper discusses using renormalization group theory to understand critical phenomena in ferromagnets. It casts the Kadanoff scaling theory for the Ising model in differential form, with the resulting equations being an example of the renormalization group differential equations. It is shown that the usual scaling laws arise naturally from the equations if the coefficients are analytic at the critical point. A generalization involving an "irrelevant" variable is also considered, where the scaling laws only result if the solution asymptotically approaches a fixed point.
Statistical approach to quantum field theorySpringer
- The document discusses path integral formulations in quantum and statistical mechanics. It introduces Feynman's path integral approach, which sums over all possible quantum mechanical paths between two points, in contrast to matrix and wave mechanics formulations.
- It derives the Feynman-Kac formula, which provides a path integral representation for the quantum mechanical propagator through an application of Trotter's theorem. This sums over all broken-line paths between the initial and final points.
- It also discusses Kac's formula, which applies to positive operators and is used in the Euclidean formulation of quantum mechanics and statistical physics.
The Analytical Nature of the Greens Function in the Vicinity of a Simple Poleijtsrd
It is known that the Green function of a boundary value problem is a meromorphic function of a spectral parameter. When the boundary conditions contain integro differential terms, then the meromorphism of the Greens function of such a problem can also be proved. In this case, it is possible to write out the structure of the residue at the singular points of the Greens function of the boundary value problem with integro differential perturbations. An analysis of the structure of the residue allows us to state that the corresponding functions of the original operator are sufficiently smooth functions. Surprisingly, the adjoint operator can have non smooth eigenfunctions. The degree of non smoothness of the eigenfunction of the adjoint operator to an operator with integro differential boundary conditions is clarified. It is indicated that even those conjugations to multipoint boundary value problems have non smooth eigenfunctions. Ghulam Hazrat Aimal Rasa "The Analytical Nature of the Green's Function in the Vicinity of a Simple Pole" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33696.pdf Paper Url: https://www.ijtsrd.com/mathemetics/applied-mathamatics/33696/the-analytical-nature-of-the-greens-function-in-the-vicinity-of-a-simple-pole/ghulam-hazrat-aimal-rasa
The document discusses key concepts in Laplace transforms including:
1) The Laplace transform is defined as an integral transform that transforms a function of time into a function of a complex variable, simplifying analysis of differential equations.
2) Important properties include the Laplace transforms of derivatives and integrals, which allow transforming differential equations into algebraic equations.
3) The existence theorem guarantees a unique solution to initial value problems under certain conditions on the function.
Dynamical Systems Methods in Early-Universe CosmologiesIkjyot Singh Kohli
The document discusses applying dynamical systems methods to develop models of the early universe. Specifically, it discusses:
1. Applying these methods to the Einstein field equations to obtain cosmological models that are spatially homogeneous but anisotropic.
2. Describing the process of analyzing the dynamics of these models, which involves identifying invariant sets, equilibrium points, monotone functions, and bifurcations in the parameter space.
3. The importance of numerical methods in understanding the global behavior of these systems, since analytical methods are often limited to local analysis near equilibrium points.
The document discusses recursive definitions of sequences, functions, sets, and strings. It provides examples of recursively defining the Fibonacci sequence, factorial function, set of prices using quarters and dimes, and set of binary numbers. It also discusses recursively defining the length, empty string, concatenation, and reversal of strings.
This document discusses the Legendre transformation, which is used to convert between Lagrangian and Hamiltonian formulations of mechanics and between different thermodynamic potentials. It provides examples of how the Legendre transformation converts between variables in classical mechanics and thermodynamics while preserving physical quantities like energy. The transformation allows describing a physical system using different but related variables that provide an equivalent description of the system's behavior.
Stability behavior of second order neutral impulsive stochastic differential...Editor IJCATR
In this article, we study the existence and asymptotic stability in pth moment of mild solutions to second order neutral stochastic partial differential equations with delay. Our method of investigating the stability of solutions is based on fixed point theorem and Lipchitz conditions being imposed.
The Scientific journal “Norwegian Journal of development of the International Science” is issued 24 times a year and is a scientific publication on topical problems of science.
Numerical Solutions of Second Order Boundary Value Problems by Galerkin Resid...iosrjce
IOSR Journal of Mathematics(IOSR-JM) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mathemetics and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mathematics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Fractional Newton-Raphson Method and Some Variants for the Solution of Nonlin...mathsjournal
The following document presents some novel numerical methods valid for one and several variables, which
using the fractional derivative, allow us to find solutions for some nonlinear systems in the complex space using
real initial conditions. The origin of these methods is the fractional Newton-Raphson method, but unlike the
latter, the orders proposed here for the fractional derivatives are functions. In the first method, a function is
used to guarantee an order of convergence (at least) quadratic, and in the other, a function is used to avoid the
discontinuity that is generated when the fractional derivative of the constants is used, and with this, it is possible
that the method has at most an order of convergence (at least) linear.
This document summarizes a presentation about reconstructing inflationary models in modified f(R) gravity. It discusses the current status of inflation based on Planck data, reviews how inflation works in f(R) gravity, and describes two approaches - the direct approach of comparing models to data and the inverse approach of smoothly reconstructing models from observational quantities like the scalar spectrum index. A key model discussed is the simple R + R^2 model that can match current measurements of the spectral index and tensor-to-scalar ratio.
The document summarizes the Kronig-Penny model, which models an electron in a one-dimensional periodic potential. It describes how the potential is a periodic square wave, allowing the Schrodinger equation to be solved analytically. It then shows the solution of the Schrodinger equation, expressing the eigenfunctions as a linear combination of periodic functions with a periodicity of the potential width. By applying boundary conditions and the translation operator over multiple periods, it derives an expression for the allowed wavevectors and thus the dispersion relation of the model.
Similar to Klauder completing canonical quantization (20)
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
Phenomics assisted breeding in crop improvementIshaGoswami9
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...Leonel Morgado
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptxMAGOTI ERNEST
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
Slides from talk:
Aleš Zamuda: Remote Sensing and Computational, Evolutionary, Supercomputing, and Intelligent Systems.
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/
ESR spectroscopy in liquid food and beverages.pptxPRIYANKA PATEL
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
Authoring a personal GPT for your research and practice: How we created the Q...Leonel Morgado
Thematic analysis in qualitative research is a time-consuming and systematic task, typically done using teams. Team members must ground their activities on common understandings of the major concepts underlying the thematic analysis, and define criteria for its development. However, conceptual misunderstandings, equivocations, and lack of adherence to criteria are challenges to the quality and speed of this process. Given the distributed and uncertain nature of this process, we wondered if the tasks in thematic analysis could be supported by readily available artificial intelligence chatbots. Our early efforts point to potential benefits: not just saving time in the coding process but better adherence to criteria and grounding, by increasing triangulation between humans and artificial intelligence. This tutorial will provide a description and demonstration of the process we followed, as two academic researchers, to develop a custom ChatGPT to assist with qualitative coding in the thematic data analysis process of immersive learning accounts in a survey of the academic literature: QUAL-E Immersive Learning Thematic Analysis Helper. In the hands-on time, participants will try out QUAL-E and develop their ideas for their own qualitative coding ChatGPT. Participants that have the paid ChatGPT Plus subscription can create a draft of their assistants. The organizers will provide course materials and slide deck that participants will be able to utilize to continue development of their custom GPT. The paid subscription to ChatGPT Plus is not required to participate in this workshop, just for trying out personal GPTs during it.
Current Ms word generated power point presentation covers major details about the micronuclei test. It's significance and assays to conduct it. It is used to detect the micronuclei formation inside the cells of nearly every multicellular organism. It's formation takes place during chromosomal sepration at metaphase.
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
2. 2
Something Strange
L. Landau, E.M. Lifshitz, Quantum mechanics:
Non-relativistic theory, 3rd ed., Pergamon Press,
1977.
"Thus quantum mechanics occupies a very unusual
place among physical theories: it contains classical
mechanics as a limiting case, yet at the same time it
requires this limiting case for its own formulation."
8. 8
Action Principle Formulations
H
R
(0)
given
)
(
:
Solution
/
yields
0
:
Variation
}
)
(
]
/
[
)
(
{
:
action
Quantum
)
0
(
),
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(
given
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(
),
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:
Solution
/
,
/
:
yields
0
:
Variation
))]
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(
)
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action
Classical
2
t
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p
t
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p
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H
p
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q
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dt
t
q
t
p
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q
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p
A
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Q
c
c
C
c
C
H
H
VERY DIFFERENT
10. 10
Unification of
Classical and Quantum (1)
H
S
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:
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Restricted
)
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]
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t
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i
t
AQ
H
)
(x
x
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; q
x
q
x
?
Macroscopic variations of Microscopic states:
Basic state:
Translated basic state:
Translated Fourier state:
Coherent states:
)
(
~
; p
k
p
k
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)
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e
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ip
0
0
)
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;
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, /
/
iP
Q
e
e
q
p ipQ
iqP
s.a.
11. 11
Unification of
Classical and Quantum (2)
dt
t
q
t
p
H
t
q
t
p
A
dt
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Quantum
H
H
CLASSICAL MECHANICS IS QUANTUM
MECHANICS RESTRICTED TO A CERTAIN TWO
DIMENSIONAL SURFACE IN HILBERT SPACE
subset
13. 13
Cartesian Coordinates
!
ntization
onical qua
tional can
t to tradi
Equivalen
dq
dp
q
p
d
q
p
q
p
d
e
D
q
q
p
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p
p
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:
metric
Study
-
Fubini
,
,
;
,
,
]
0
0
0
,
0
0
0
[
:
meaning
Physical
)
,
;
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)
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0
)
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:
connection
Quantum
Classical/
2
2
2
2
2
2
O
H
H
H
15. 15
Is There More?
• Are there other two-dimensional sheets
of normalized Hilbert space vectors that
may be used in restricting the quantum
action and which lead to an enhanced
classical canonical formalism?
16. 16
Is There More?
• Are there other two-dimensional sheets
of normalized Hilbert space vectors that
may be used in restricting the quantum
action and which lead to an enhanced
classical canonical formalism?
YES !
20. 20
The Q/C Connection : Summary
• The classical action arises by a restriction of
the quantum action to coherent states
• Canonical quantization uses P and Q which
must be self adjoint
• Affine quantization uses D and Q which are self
adjoint when Q > 0 (and/or Q < 0)
• Both canonical AND affine quantum versions
are consistent with classical, canonical
phase space variables p and q
• Now for some applications!
21. 21
TOPIC 2
• Solutions of the first model have singularities
• Canonical quantum corrections
• Affine quantum corrections
• Affine quantization resolves singularities!
• A second classical model is similar
2
0
0
1
0
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2
0
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)
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p
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p
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dt
t
p
t
q
t
p
t
q
A T
C
22. 22
Toy Model - 1
qQ
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q
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M
E
C
K
D
DQ
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t
M
t
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DQ
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p
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/
)
ln(
/
)
ln(
/
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0
2
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1
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2
2
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0
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0
1
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4
;
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)
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)
1
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Classical
23. 23
Toy Model - 2
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|
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model
Toy
0
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0
|
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;
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:
states
coherent
Affine
)
(
,
]
,
[
]
,
[
:
on
quantizati
Affine
2
2
2
1
2
2
1
2
2
2
2
2
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2
2
2
1
2
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2
1
/
|)
ln(|
/
2
1
C
s
Bohr radiu
C
me
C
P
C
e
e
C
q
C
q
C
p
q
p
Q
e
P
q
p
Q
q
p
q
P
q
p
Q
P
q
p
q
p
H
dt
q
p
H
p
q
dt
q
p
Q
P
t
i
q
p
A
a
bD
aQ
dt
q
e
p
p
q
A
q
Q
e
e
q
p
PQ
QP
D
D
Q
Q
i
Q
P
Q
m
m
m
m
R
m
C
D
q
i
ipQ
H
H
H
24. 24
Enhanced Toy Models : Summary
• Classical toy models exhibit singular solutions
for all positive energies
• Enhanced classical theory with canonical
quantum corrections still exhibits singularities
• Enhanced classical theory with affine
quantum corrections removes all
singularities
• Enhanced quantization can eliminate
singularities
25. 25
TOPIC 3
• Rotationally symmetric models
• Free quantum models for
• Interacting quantum models for
• Reducible operator representation is the key
,
)
,
,
(
,
)
,
(
,
,
)
,
(
}
{
,
)
(
]
[
)
,
( 1
2
2
0
2
2
0
2
2
1
q
p
Q
P
q
p
q
p
H
q
p
q
p
q
p
H
N
N
p
p
q
q
m
p
q
p
H N
n
n
H
H
]
[ 2
p
p
p
. . .
26. 26
Rotationally Sym. Models (1)
N
that
necessary
is
it
N
When
N
Q
Q
m
P
i
P
Q
Q
q
P
p
Y
XZ
q
p
L
E
q
Z
q
p
Y
p
X
R
N
O
q
O
q
p
O
p
N
q
q
m
p
q
p
H
q
q
q
p
p
p
jk
k
j
N
N
/
,
,
:
)
(
:
:
:
:
n
Hamiltonia
]
,
[
;
,
:
on
Quantizati
)
(
,
:
motion
of
Constants
,
,
:
invariants
Basic
)
,
(
;
,
under
Invariant
;
)
(
]
[
)
,
(
)
,...,
(
,
)
,...,
(
:
s
coordinate
space
Phase
0
2
2
0
2
2
0
2
2
1
2
2
2
2
2
2
2
0
2
2
0
2
2
1
1
1
H
O
27. 27
Rotationally Sym. Models (2)
;
)
(
:
Result
m)
2
/
1
(
)
(
:
Uniqueness
]
1
)
(
[
;
)
(
)
(
)
sin(
)
(
)
(
)
(
on
distributi
state
ground
the
of
on
ansformati
Fourier tr
).
(
)
(
:
with
)
(
real
a
ith
equation w
er
Schroeding
m
4
/
0
0
2
/
2
1
2
)
2
(
2
/
2
2
1
2
/
)
cos(
2
/
2
2
2
2
2
p
bp
N
N
N
N
r
p
N
N
N
N
N
ipr
N
x
p
i
N
N
N
N
e
p
C
b
b
f
db
b
f
db
b
f
e
d
dr
r
r
e
K
d
d
dr
r
r
e
x
d
x
e
p
C
x
r
symmetry
rotational
full
x
und state
unique gro
A free theory!
29. 29
Rotationally Sym. Models (3)
N
q
q
m
p
q
m
v
q
m
q
m
p
q
p
Q
S
m
R
v
Q
S
m
R
S
Q
m
P
q
p
q
p
q
p
P
q
Q
p
i
q
p
R
i
Q
S
m
P
i
S
Q
m
N
q
m
p
w
q
m
p
q
p
Q
m
P
w
Q
m
P
q
p
q
p
q
p
P
q
Q
p
i
q
p
P
i
Q
m
;
)
(
)
(
)
(
)
(
;
,
:}
]
)
(
[
:
:
)
(
:
:
)
(
:
{
;
,
;
,
;
,
;
0
]
/
)
(
exp[
;
,
1
0
;
0
;
0
]
)
(
[
;
0
]
)
(
[
;
)
(
)
(
,
:}
)
(
:
:
:
{
,
,
~
,
0
]
/
)
(
exp[
,
;
0
0
)
(
2
2
0
2
2
0
2
2
1
2
2
4
4
2
2
2
2
1
2
2
2
2
1
2
2
2
2
2
2
2
2
1
2
2
2
2
1
2
2
2
0
2
2
2
0
2
2
1
2
2
2
0
2
2
2
0
2
2
1
0
H'
H
T
E
S
T
R
E
A
L
30. 30
Rot. Sym. Models : Summary
• Conventional quantization works if N is
finite but leads to triviality if N is infinite
• Enhanced quantization applies even for
reducible operator representations
• Using the Weak Correspondence
Principle
a nontrivial quantization results if N is finite
or N is infinite --- with NO divergences !
• Class. & Quant. formalism is similar for all N
q
p
q
p
q
p
H
,
,
)
,
( H
WHAT HAS BEEN ACCOMPLISHED ??
31. 31
• Canonical quantization requires Cartesian
coordinates, but WHY is not clear
• Canonical quantization works well for
certain problems, but NOT for all problems
• Enhanced quantization clarifies coordinate
transformations and Cartesian coordinates
• Enhanced quantization can yield canonical
results -- OR provide proper results when
canonical quantization fails
Canonical vs. Enhanced
32. 32
Other Enh. Quant. Projects
• Simple models of affine quantization eliminating
classical singularities (on going)
• Covariant scalar models (done)
• Affine quantum gravity (started)
• Incorporating constrained systems within
enhanced quantization (started)
• Additional sheets of vectors in Hilbert space
relating quan. and class. models (started)
• Extension to fermion fields (hints)
4
n