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.

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 4:00 in B405 (particle theory conference room)
  • Official talk: Fri 2:30 in C421 (lecture room)

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Contents

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Wiki

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Spring 2013: Effective Field Theories

This quarter we will discuss Effective Field Theories (EFTs). During the first three weeks we will cover the Operator Product Expansion (OPE). The next three weeks will be on Heavy Quark Effective Theory (HQET) and the final three weeks will be on Soft Collinear Effective Theory (SCET).


Introduction to OPEs, 4/5
  • Speaker - Stefan Janiszewski
  • Abstract - The quarter kicks off with an introduction to the operator product expansion. After discussing the notion and its validity, we will explore the consequences of symmetries, and the complications introduced from renormalization in interacting theories.
  • Notes - Here
  • References - Peskin and Schroeder 12.4 & 18.3, Polchinski 2.1-2.3, and OPE in QFT


Applications of OPE to Deep Inelastic Scattering, 4/12
  • Speaker - Han-Chih Chang
  • Abstract - Continued from last talk, I will examine the application of OPE in the framework of lower energy effective theory: Using weak meson decay as a motivation, the notions of operation renormalization, operation mixing, and operator coefficient running are revisited, ending with the perturbative approximation for delta-Isospin-equal-one-half rule for Kaon decay.
  • References -
    • Heavy Quark Physics, by Manohar and Wise, Chapter 1
    • Weak Hamiltonian, CP Violation and Rare Decays, Buras, arXiv:hep-ph/9806471
    • Renormalization, Collins
Applications of OPE to Conformal Field Theory, 4/19
  • Speaker - Sudip Paul
  • Abstract -
  • Notes -
  • References -


Introduction to HQET, 4/26
  • Speaker - Yu-Sheng Liu
  • Abstract - The concept of HQET is not exactly the same as usual EFT. I start from the observation of mass spectrum of heavy mesons. There must be some symmetry to protect the mass splitting. Next, I motivate the physical argument of HQ approximation, then write down its Lagrangian in both position and momentum space in different approach. To relate to physical quantities, matrix element is necessary. I show how to calculate matrix element under HQ approximation. Finally, I discuss the difference between EFT and HQET.
  • Outline -
    • 1. HQ & muck
    • 2. Lagrangian
    • 3. matrix element
    • 4. EFT vs HQET
  • Notes - Requested in Person
  • References -
    • chapter 2 and 4, Heavy Quark Physics, by Manohar and Wise
    • Heavy quark effective field theory, by Howard Georgi, TASI lectures in 1991


Chiral Pertubation Theory, 5/3
  • Speaker - Derek Horkel
  • Abstract -
  • Notes -
  • References -


Heavy Meson Chiral Perturbation Theory, 5/10
  • Speaker - Akshay Ghalsasi
  • Abstract -
  • Notes -
  • References -


Introduction to SCET, 5/17
  • Speaker - Mackenzie Barton-Rowledge
  • Abstract -
  • Notes -
  • References -


SCET II, 5/24
  • Speaker - Dorota Grabowska
  • Abstract -
  • Notes -
  • References -


SCET III, 5/31
  • Speaker - Jakub Scholtz
  • Abstract -
  • Notes -
  • References -
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Previous Topics

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

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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.

  • Applications of QFT to atomic physics
  • Dark matter
  • 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
  • Mathematical Physics
  • Introduction to String Theory
  • QCD phase diagram
  • Collider Physics
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