Introduction the UCR Particle Theory Group to first year graduate students. 1 March 2017.

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J O I N I N G 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
1 March 2017 Physics 288
UC Riverside Particle Theory
HOW TO HEP-PH
theory.ucr.edu
UCR Physics Department

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2Andrew Grant, Science News, June 2013

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State of Particle Physics: 2017
“There is nothing new to be discovered in
physics now. All that remains is more and more
precise measurement”
— Kelvin (apocryphal)
1890s 1905
SR
1915
GR
1920s
quantum
relativistic quantum
non-Abelian gauge theory
renormalization
strings
holography
new particles neutrino mass
accelerating expansion
dark matter timeHiggs
Cosmic Microwave BG
conformal bootstrap
B-modes
gravitational waves

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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

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Prof. Flip Tanedo
INTERESTS:
What is dark matter?
How can we determine its properties?
… terrestrial, astro-particle, cosmological
What else is it good for?
What stabilizes the Higgs mass?
What is strong dynamics good for?
How do we test our hypotheses?

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Particle Phenomenology
MYSTERY
examples:
Theory: what makes W scattering unitary? (Higgs boson)
Experiment: observed excess in 𝛾-rays … dark matter?

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Particle Phenomenology

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Particle Phenomenology

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Particle Phenomenology
PREDICTION MYSTERY

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Where we earn our stripes
HACK
full theory
predictions
interpretation
consistency

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Weakly-Coupled Strong Dynamics
MY THEME:
Room for all sorts
of neat theories in
the dark sector.
… can use past
Higgs sector
creativity as a
launching point
My thesis title and Ph.D. defense flyer, 2013
FLIGHT OF THE WARPED PENGUINS
AND OTHER WEAKLY COUPLED TALES OF STRONG DYNAMICS
10:00AM PSB 301
TUESDAY MAY 21
Flip Tanedo
A DISSERTATION BY

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Currently Thinking About (Part I)
Dark Matter Mediator
Standard ModelU(1)’
Standard
ModelHiggs
Dark Matter Mediator
Standard
Model
⌫R
Kinetic
Mixing
Dark
Matter
Ways to “subvert” ordinary portals to the dark sector

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e.g. Majorino dark matter
Dark Matter
Mediator
Standard
Model
⌫R
supersymmetric
MAJORON
MAJORINO
order parameter for lepton number violation
SUSY

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Currently Thinking About (Part II)
Ways to “subvert” ordinary searches for the dark sector

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Example: Earth capture
Feng, Smolinsky, Tanedo (1509.07525 )

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What is it like to be a theorist?
• The best qualities to have are:
depth of understanding & creativity
• You will spend your time:
— Learning and re-learning known physics
— Deriving implications of new ideas
— Interpreting experimental results
— Collaborating with others to generate new ideas
— Communicating these ideas (talks, papers)
• Need to be tenaciously curious
• Humility towards subject, moxie in your ambitions

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Preparation
• quantum field theory
• 2013 BSM lectures arXiv:1602.04228
• useful technical skills
• LaTeX, Python, Mathematica; C++, Root, …
• (Lie) group theory; differential geometry
• useful coursework (we expect top marks)
• E&M, Quantum Mechanics, Statistical Physics
• Statistical Field Theory / all the QFT you can take
• General relativity, cosmology

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Hai-Bo’s Catechism
THE KEY TO SUCCESS IN OUR FIELD:
10 hours per day
6 days a week
… REPEAT FOR 10 YEARS
from Hai-Bo Yu

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What it’s like to work with me
• Start as tightly coupled system: frequent check
ins, first projects will be micro-managed
• Training includes writing/reading papers, how to
give talks, collaborating with peers, …
• Goals: develop good habits, become
independent, well positioned for next job

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Goals for my students
you
• Work with multiple faculty
• Publications & letters of
recommendation

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world
expert
on this
space of ideas
Light Mediators
dark matter
capture
Supersymmetry
you

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space of ideas
Dark
Matter
Theory of Strong Dynamics
Cosmology
Other funny ideas …
Collider Physics
new
searches
still you, but closer to scale

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Road Map
Excel in courses, be curious about particle physics
Ace the qualifying exam, small summer project
Meet 3x per week, micromanaged
Rapid expertise in a small topic
Drinking from the firehose learning
Projects with faculty, expand bubble of expertise
Give journal club talks, work with other students
Summer schools, conference talks
Projects with faculty outside UCR
Initiate your own projects, invited seminars
Launch towards a top postdoc position

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Your next steps
• Talk to us & to senior graduate students
• Do exceptionally well in relevant
coursework: E&M, QM, field theory
• Pass Ace the qualifying exams
• Do your “homework,” attend seminars
theory.ucr.edu