Mini-school on 'theoretical methods in particle physics'
Event description
The program consists of three advanced courses (taught on black-
boards) on theoretical
methods in quantum field theory intended for MSc, PhD students, and postdocs:
- The c/a theorem and QFT in curved spacetime (Graham Shore, Swansea University)
- Bound states in gauge theory (Paul Hoyer, University of Helsinki)
- Higher spin theories (Dario Francia, Scuola Normale Superiore Pisa)
No registration fee. Funding for local stay available in exceptional
cases.
A preliminary schedule can be found at the bottom of this page.
For more information contact the organizers: Roman.Zwicky [at] ed.ac.uk (Roman
Zwicky), Luigi.Del.Debbio [at] ed.ac.uk (Luigi Del Debbio).
Please register by sending an email to admin-general [at] ph.ed.ac.uk.
(list of suitable accomodation upon request)
The three courses will cover the following topics
"The c/a theorem and QFT in curved spacetime" (Graham Shore)
Abstract:
The c/a theorem is a fundamental result in quantum field theory constraining
the nature of renormalization group flows and the relation of UV and IR
physics.
In the first part of these lectures, we will review early attempts to
generalise the
2-dim Zamolodchikov c-theorem to four dimensions, then discuss the 2011 proof
of a 4-dim a-theorem by Komargodski and Schwimmer together with recent
developments and speculations. In the second part, we will discuss QFT in
curved
spacetime and show how the background geometry induces a novel analytic
structure for Green functions with important consequences for causality,
unitarity,
dispersion relations and the optical theorem, all of which play a vital role
in proving
the c/a theorem in flat spacetime.
You can read a nice summary of the current debate on the a-theorem here:
http://www.nature.com/news/proof-found-for-unifying-quantum-principle-1.9352
"Bound states in gauge theory" (Paul Hoyer)
Abstract:
The aim of understanding hadrons as bound states of QCD motivates a study of
how
atoms emerge in QED perturbation theory. The properties of atoms in motion
illuminate
relativistic effects on bound states, such as Lorentz contraction in quantum
physics. The
Dirac equation results from summing a certain subset of Feynman diagrams. The
Dirac
spectrum reflects the degrees of freedom of a single electron even though the
Fock
states have any number of electron-positron pairs. The solutions of the Dirac
equation
for a confining (linear) potential are qualitatively different from those
obtained with a 1/r
potential. The QED experience suggests an approach to hadrons which is
consistent
with the field theory rules of QCD.
"Higher spin theories" (Dario Francia)
Abstract:
In these lecture we shall provide an introduction to the basics of higher-spin
theory.
We shall start with the general structure of the free theory (metric-like and
frame-like
approaches in flat and (A)dS bkg, for symmetric and mixed-symmetry fields) to
then
move to illustrate the main difficulties met at the interaction level. In the
second part
of the course we shall deal with positive results about higher-spin non-linear
theories,
including the construction of cubic vertices and Vasiliev's equations. The
idea is to
provide an introduction to the essential language and techniques used in the
literature,
to highlight some technical steps in a concrete way and to indicate a few open
directions.
---- preliminary schedule
Mo Tu We Th Fr
10-12.15 A/C-thm A/C-thm High.Spin Bound Bound
14-16.15 Bound High.Spin A/C-thm High.Spin
coffee-break ca 15 min -- venue: Higgs centre lecture room (Kings Buildings)
-----------------------------------------------------------------------------------------------------------
Timetable
See the full timetable on Indico
- 30 Sep / 09:00—11:15
- A/C theorem (2h15′)
- Speaker(s):
- 30 Sep / 13:00—15:15
- Bound states (2h15′)
- Speaker(s):
- Hoyer, Paul
- 1 Oct / 09:00—11:15
- A/C theorem (2h15′)
- Speaker(s):
- 1 Oct / 13:00—15:15
- Higher spin (2h15′)
- Speaker(s):
- Francia, Dario
- 2 Oct / 09:00—11:15
- Higher spin (2h15′)
- Speaker(s):
- Francia, Dario
- 2 Oct / 13:00—15:15
- A/C theorem (2h15′)
- Speaker(s):
- 3 Oct / 09:00—11:15
- Bound states (2h15′)
- Speaker(s):
- Hoyer, Paul
- 4 Oct / 09:00—11:15
- Bound states (2h15′)
- Speaker(s):
- Hoyer, Paul
- 4 Oct / 13:00—15:15
- Higher spin (2h15′)
- Speaker(s):
- Francia, Dario
Mini-school on 'theoretical methods in particle physics'
Venues
School of Physics and Astronomy
James Clerk Maxwell Building, 4305
Peter Guthrie Tait Road
Edinburgh
EH9 3FD
UK
Organisers
- Luigi Del Debbio(
- University of Edinburgh
- Roman Zwicky(
- University of Edinburgh
Key speakers
- Graham SHORE
- Hoyer, Paul
- Graham SHORE
- Francia, Dario
- Francia, Dario
- Graham SHORE
- Hoyer, Paul
- Hoyer, Paul
- Francia, Dario
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