Particle Theory Journal Club

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The Particle Theory Journal Club is a series of weekly talks given by graduate students and aimed at graduate students. This quarter we will be discussing effective field theories.

Students who will be giving talks should register for 2 credits of Ph 582; students who will only be attending should register for 1 credit.

  • Practice talk: Wed 4:30 in B405 (particle theory conference room)
  • Official talk: Fri 2:30 in C421 (seminar room)


Contents

Wiki

The Condensed Matter Journal Club also has a (vastly inferior) wiki.

In order to edit these pages or to view pages other than the main page one must obtain a Wiki account. It is easy to obtain a Wiki account by simply sending an email to Chris Vermilion (verm@u). Anyone can have a Wiki account -- and we encourage you to get an account -- that's the whole point of Wiki.

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Autumn '09: Effective Field Theories

10/09 - Renormalizing the Schrodinger Equation
  • Stefan Janiszewski
  • Abstract - When we are only concerned with the low energy behavior of a theory, either to ease calculation, or because the true high energy theory is unknown, we can determine an effective Hamiltonian which will recreate the true theory arbitrarily well (at low energies.) This has a simple and universal form. Via this process of "renormalization," for low energy processes we can calculate binding energies, phase shifts, wave-function values, and matrix elements to desired accuracy.
  • Refs -


10/16 - Introduction to Effective Field Theory
  • Brian Mattern
  • Abstract -
  • Refs -


10/23 - Fermi Liquids
  • Isaac Crosson
  • Abstract - I introduce the method of effective field theory, and derive the EFT of low energy excitations in a conductor, the Landau Theory of Fermi Liquids. We will see that the solid state model of a conductor as a nearly free electron gas is realized as a self-consistent EFT in which nearly all the interactions are irrelevant, and using a Renormalization Group analysis we will see how BCS superconductivity arises from the scaling fluctuations of a marginally relevant operator.
  • Refs - Polchinski 1991, Effective Field Theory and the Fermi Surface, hep-th/9210046


10/30 - Non-Relativistic QED (NRQED)
  • Alan Jamison
  • Abstract - Calculating bound-state properties using relativistic field theories is notoriously difficult. For non-relativistic systems an effective field theory may be used to substantially simplify the analysis. We will look at non-relativistic quantum electrodynamics (NRQED). We will see how this EFT is built and consider some of the intricacies of matching at higher orders.
  • Refs -
    • A nice introduction
    • The original paper, which Lepage himself refers to as overly terse
      • Caswell and Lepage, Effective Lagrangians for Bound State Problems, Phys Letters 167B, 4, p.437
    • A good account of the details of constructing and using NRQED
      • Kinoshita and Nio, Radiative Corrections to the Muonium hyperfine structure, PRD 53, 9, p.4909
    • Another important calculation is the Lamb shift. See
      • Labelle and Zebarjad, Derivation of the Lamb Shift Using an Effective Field Theory, hep-ph/9611313


11/06 - Introduction to Chiral Perturbation Theory (ChPT)
  • Kamil Michnicki
  • Abstract -
  • Refs -


11/13 - Heavy Baryon ChPT
  • Daniel Bolton
  • Abstract -
  • Refs -


11/20 - Soft Collinear EFT
  • Chris Vermilion
  • Abstract -
  • Refs -


12/04 - Heavy Quark EFT
  • Raul Briceno
  • Abstract -
  • Refs -


12/11 - Hot QCD
  • Jon Walsh
  • Abstract -
  • Refs -

Previous Topics

The archives from the old JC webpage have been migrated over; some could still use prettying up.

Potential Future Topics

Feel free to add to this list! This is a compilation of any serious suggestion for a future topic. Anything in the list of previous topics older than a year or two is also fair game.

  • Dark matter
  • Effective field theories
  • Critical phenomena
  • Recent experiment salmagundi
  • B physics (related: flavor physics)
  • Dualities in field theory
  • Quantum field theories in curved spacetime
  • AdS/CFT and condensed matter physics
  • Monte Carlos
  • High-energy QCD phenomenology
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