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Introduction to the UCR particle theory group for first year graduate students. Physics 288 presentation.
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dimensions are thought to be somehow inside the big ones we can perceive directly. Does the
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Explain your answer
Solution
Quantum Theory just seems too weird to believe. Particles can be in more than one place at a
time.
And they don\'t exist until you measure them. Spookier still, they en stay in touch when they are
separated by great distances.
Einstein thought this was all a bit much, believing it to be evidence of major problems with the
Theory as many critics still suspect today. Quantum enthusiasts point to the theory\'s
extraordinary
success in explaining the behavior of atoms, electrons, and other quantum systems. They insist
we have
to accept the Theory as it is, however strange it may seem.
But what if there were a way to reconcile these 2 opposing views by showing how Quantum
Theory
might emerge from a deeper level of non-weird Physics?
If you listen to physicist Tim Palmer, it begins to sound plausible. What has been missing, he
argues, are some key ideas from an area of science that most quantum physicists have ignored.
Namely
the science of Fractals -- those intricate patterns found in everything from fractured surfaces to
oceanic
flows (see \"What is a Fractal?\").
Take the mathematics of Fractals into account, says Palmer, and the long-standing puzzles of
Quantum Theory may be much easier to understand. They might even dissolve away.
It is an argument that is drawing attention from physicists around the World. \"His approach is
very
interesting and refreshingly different,\" says physicist Robert Spekkens of the Perimeter Institute
for
Theoretical Physics in Waterloo, Canada. \"He\'s not just trying to reinterpret the usual quantum
formalism but actually to derive it from something deeper.\"
That Palmer is making this argument may seem a little odd, given that he is a climate scientist
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under the same PhD adviser as Stephen Hawking.
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1\"It has taken 20 years of thinking,\" says Palmer. \"But I do think that most of the paradoxes of
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meant tha.
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2) In the 1960s, four fundamental forces were known - gravity, electromagnetism, and the strong and weak nuclear forces. Developments in the 1960s and 1970s unified electromagnetism and the weak force, though gravity remained separate.
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Physicists believe that our universe has more than 4 dimensions--3 spatial ones plus a time
dimension--with some theories suggesting 10 dimensions and others 11. The \"extra\"
dimensions are thought to be somehow inside the big ones we can perceive directly. Does the
idea of fractal geometry suggest to you any ways in which this theory might make sense?
Explain your answer
Solution
Quantum Theory just seems too weird to believe. Particles can be in more than one place at a
time.
And they don\'t exist until you measure them. Spookier still, they en stay in touch when they are
separated by great distances.
Einstein thought this was all a bit much, believing it to be evidence of major problems with the
Theory as many critics still suspect today. Quantum enthusiasts point to the theory\'s
extraordinary
success in explaining the behavior of atoms, electrons, and other quantum systems. They insist
we have
to accept the Theory as it is, however strange it may seem.
But what if there were a way to reconcile these 2 opposing views by showing how Quantum
Theory
might emerge from a deeper level of non-weird Physics?
If you listen to physicist Tim Palmer, it begins to sound plausible. What has been missing, he
argues, are some key ideas from an area of science that most quantum physicists have ignored.
Namely
the science of Fractals -- those intricate patterns found in everything from fractured surfaces to
oceanic
flows (see \"What is a Fractal?\").
Take the mathematics of Fractals into account, says Palmer, and the long-standing puzzles of
Quantum Theory may be much easier to understand. They might even dissolve away.
It is an argument that is drawing attention from physicists around the World. \"His approach is
very
interesting and refreshingly different,\" says physicist Robert Spekkens of the Perimeter Institute
for
Theoretical Physics in Waterloo, Canada. \"He\'s not just trying to reinterpret the usual quantum
formalism but actually to derive it from something deeper.\"
That Palmer is making this argument may seem a little odd, given that he is a climate scientist
working at the European Centre for Medium-Range Weather Forecasting in Reading, UK. It
makes
more sense when you learn that Palmer studied General Relativity at the University of Oxford,
working
under the same PhD adviser as Stephen Hawking.
So while Palmer has spent the last 20 years establishing a reputation as a leading mathematical
climatologist, he has also continued to explore the mysteries of his first interest -- Quantum
Theory (see
\"Quantum Ambitions\").
1\"It has taken 20 years of thinking,\" says Palmer. \"But I do think that most of the paradoxes of
Quantum Theory may well have a simple and comprehensible resolution.\"
Arguments over Quantum Theory have raged since the 1920s starting with a series of famous
exchanges between Einstein and the Danish physicist Niels Bohr.
Bohr and his supporters believed that the Theory\'s successful description of atoms and radiation
meant tha.
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This document provides an overview of the topics to be covered in a Physics 357/457 course on elementary particle physics. The course will examine the elementary particles like quarks and leptons, the forces that govern their interactions, and theoretical models used to understand particle physics, including the Standard Model. It outlines the course structure, evaluation methods, and provides a list of reference materials for further reading on topics covered during the semester.
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A preponderance of scientific evidence over the last hundred years tells us that our galaxy is filled with an unknown substance called dark matter. In fact, there is five times as much dark matter in the universe than there is ordinary matter: we are swimming in an ocean of dark matter and we have no firm idea what it is. We suspect that dark matter is composed of undiscovered elementary particles whose properties may, in turn, unlock some of the most pressing open questions in fundamental physics. So why haven't we figured out how to study dark matter in the lab, and why should we be optimistic that we may make progress in the coming decades?
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The document discusses theories of dark matter from the 1990s, when supersymmetry was a favored explanation. Supersymmetry posited that each standard model particle has a supersymmetric partner to address problems like the Higgs mass and proton decay. Imposing R-parity conservation made the lightest supersymmetric particle stable and a dark matter candidate. This "neutralino" would be a weakly interacting massive particle with weak-scale mass and couplings that could naturally produce the observed dark matter abundance through thermal freeze-out in the early universe, in what became known as the "WIMP miracle". While promising, direct searches for WIMPs have so far found nothing, and new ideas for dark matter are now being explored.
Stephen Hawking Theory Of Everything
1) Stephen Hawking summarized his 1980 lecture where he discussed the progress made in theoretical physics over the previous century and questioned if a complete unified theory could be found by the end of the 20th century.
2) In the 1960s, four fundamental forces were known - gravity, electromagnetism, and the strong and weak nuclear forces. Developments in the 1960s and 1970s unified electromagnetism and the weak force, though gravity remained separate.
3) Hawking proposes that like maps of the Earth's curved surface, there may be multiple overlapping theories needed to describe physics in all situations, rather than one single unified theory, though progress continues to be made theoretically through proposals
Exploring+CERN.compressed
1) The document discusses CERN, the particle physics laboratory located near Geneva, Switzerland. It describes some of the research being done there, including experiments using the Large Hadron Collider to better understand the universe.
2) The Large Hadron Collider fires beams of protons towards each other at close to the speed of light to simulate the high energy conditions that existed shortly after the Big Bang. Experiments detect the subatomic particles created in these collisions to learn about fundamental forces and particles.
3) One goal is to find the Higgs boson particle, which could help explain how other particles acquire mass. Researchers also hope to gain insights into dark matter, black holes, and theories of everything. The scale of the
Scientific Method
The document discusses the scientific method and how it has evolved over time. It begins by defining science as the empirical study of nature. It then discusses three main methodologies in science: reductionism, which explains phenomena in terms of underlying mechanisms; structuralism, which studies complex phenomena as original systems; and "universalism", which makes statistical predictions about classes of similar systems. The document traces how these methodologies have developed from classical physics to modern fields like quantum mechanics and biology. It also explores how mythologies can provide metaphorical insights that inspire scientific hypotheses.
Science Fact Or Fiction
This document provides 10 examples of science fact or fiction questions related to space and sci-fi topics. It summarizes the evidence for whether each statement is factual or fictional. Key findings include that multiple planetary systems have been discovered, some microorganisms can survive in space without protection, and organisms have been found thriving in extremely hot water. However, there is no conclusive evidence of life beyond Earth and we do not currently have the technology for interstellar travel or teleporting people.
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O exoplaneta, conhecido como 51 Eridani b, orbita sua estrela hospedeira a uma distância equivalente a 13 vezes a distância da Terra ao Sol (o equivalente a uma distância entre Saturno e Urano no nosso Sistema Solar). O sistema está localizado a cerca de 100 anos-luz de distância. Os dados do Gemini, também forneceram aos cientistas as detecções espectroscópicas de metano já detectadas na atmosfera de um planeta fora do nosso Sistema Solar, adicionando mais similaridades desse exoplaneta com os planetas gigantes do nosso Sistema Solar.
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Particle physics aims to determine what matter is made of by searching for elementary particles that cannot be broken down further. Particle accelerators like linear colliders and cyclotrons smash particles together to deduce their structure. Unstable particles decay into more stable configurations with lower energy over time, which is why common matter is composed of protons, neutrons, and electrons.
Short Review of the Unitary Quantum Theory
The paper proposes a model of a unitary quantum field theory where the particle is represented as a wave packet. The frequency dispersion equation is chosen so that the packet periodically appears and disappears without changing its form. The envelope of the process is identified with a conventional wave function. Equation of such a field is nonlinear and relativistically invariant. With proper adjustments, they are reduced to Dirac, Schroedinger and Hamilton-Jacobi equations. A number of new experimental effects are predicted both for high and low energies.
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Presented at the 2022 APS April Meeting, session Z05.00009
Abstract: We present a novel approach for student assessment in large physics lecture courses on student-recorded videos. Students record 5-minute videos teaching how to solve a problem to other students and are partially graded based on peer reviews from other students. After piloting this method during COVID-19 remote teaching over the last year and a half, we have found encouraging indications that it (1) promotes student self-efficacy and metacognition, (2) builds in a deeper engagement with the material, (3) encourages student creativity, (4) develops technical and critical communication ability, and (5) avoids long-standing issues with digital plagiarism. Though the method was developed during pandemic teaching, we propose that aspects can be readily applied to in-person teaching and scales with class size. We comment on the potential to support diverse student retention in physics and outline potential pedagogical trade-offs of this method.
Equity as an Early Career Academic
This document summarizes Flip Tanedo's presentation on equity as an early career academic. Tanedo discusses their experience on the tenure track and lessons learned. As a student, the focus is individual survival and support, but as a faculty member the goals shift to lifting others, changing institutions, and stewarding disciplines through mentoring and persistence. Achieving equity requires understanding incentives and compensating equity work. Building trust in institutions is important but fragile, so efforts should reaffirm shared values.
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Popular Book Discussions: a platform for equity in physics
The document discusses a framework for book club discussions between high school teachers and university physicists about equity in physics. It proposes using popular science books as a common ground to have discussions across different backgrounds and lived experiences. It provides an example of a pilot program where this was done as part of a physics teacher training with discussions of the book "Women in Physics". The goal is to improve preparation of students for university physics and make undergraduate education more inclusive. It suggests expanding this to a network of coordinated book clubs across districts and connections to broader physics education initiatives.
Non-Traditional Assessment and Inclusivity in Physics Teaching
This document discusses non-traditional methods of assessment in physics courses, inspired by remote teaching necessitated by the COVID-19 pandemic. It describes using explainer videos created by students to teach concepts to peers, followed by peer review, as well as one-on-one interviews, as alternatives to exams. The goal is to develop students' physics identity and sense of belonging in physics through assessing in a way that emphasizes creativity, communication, and viewing students as physics experts. Examples from a thermodynamics course are provided.
Figuring It Out
This document contains a presentation by Prof. Flip Tanedo about their background and work. It discusses Prof. Tanedo's educational and professional experiences, including being the first in their family to attend college. It also describes their research focusing on theoretical particle physics and dark matter. Prof. Tanedo shares their goal of increasing equity in science through teaching and mentoring students from underrepresented groups.
Vector Self-Interacting Dark Matter
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Warped Dark Sector
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1) A warped extra dimension with a bulk mediator field can encode a continuum/tower of Kaluza-Klein states that goes beyond the narrow width approximation at high energies.
2) The propagator for a bulk mediator field can be represented as a sum over individual KK modes or using the continuum approximation, both of which reproduce the expected fractional power potential at long distances.
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Warped Dark Sector
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How to hep-ph
- 1. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 1 A B O U T T H E U C R PA R T I C L E T H E O R Y G R O U P Flip Tanedo 15 January 2020 Physics 288 UC Riverside Particle Theory HOW TO HEP-PH theory.ucr.edu
- 2. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 2 Faculty Yanou Haibo Flip Jose Brian (HMC) Ernest (emeritus)
- 3. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 3 So you can imagine life is quite difficult John Mulaney The Comeback Kid Netflix
- 4. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 4 What we work on
- 5. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 5 Astro + Cosmo: Dark Matter Exists 5% 27% 68% Standard Model is not complete GALACTIC ROTATION CURVES GRAVITATIONAL LENSING COSMIC MICROWAVE BACKGROUND Images: Jeff Filippini (Berkeley Cosmology 2005), NASA APOD 2006, NASA WMAP How do we “do particle physics” on this stuff?
- 6. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 6 Other curious puzzles Why is the weak scale stable vs. quantum corrections? Why is there more matter than antimatter? Are neutrinos trying to tell us something? How can other fields tell us about our theory of matter and forces?
- 7. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 7 Particle Phenomenology MYSTERY examples: Theory: what makes W scattering unitary? (Higgs boson) Experiment: observed excess in 𝛾-rays … dark matter?
- 8. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 8 Particle Phenomenology
- 9. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 9 Particle Phenomenology
- 10. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 10 Particle Phenomenology PREDICTION MYSTERY
- 11. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 11 Where we earn our stripes HACK full theory predictions interpretation consistency
- 12. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 12 world expert on this space of ideas Light Mediators dark matter capture Supersymmetry you
- 13. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 13 space of ideas Dark Matter Theory of Strong Dynamics Cosmology Other funny ideas … Collider Physics new searches still you, but closer to scale
- 14. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 14 Hai-Bo’s Catechism THE KEY TO SUCCESS: 10 hours per day 6 days a week … REPEAT FOR 10 YEARS from Hai-Bo Yu
- 15. flip . taned o 13 ucr . edu @ UCR PHYSICS 288 15 Advice Find material appropriate to your level and interests, and read aggressively: lectures, review articles. Better: keep a notebook and do calculations. Write them pedagogically, and let yourself be wrong. Aim to be wrong in every reasonable way and annotate the pitfalls. Your work