Effective Field Theory

Video Lectures

Displaying all 26 video lectures.
I. Introduction to Effective Field Theory
Lecture 1
Introduction to Effective Field Theory (EFT)
Play Video		 Introduction to Effective Field Theory (EFT)
In this lecture, the professor discussed EFT of Hydrogen, top-down and bottom-up, and renormalizable EFT.
Lecture 2
Dimensional Power Counting
Play Video		 Dimensional Power Counting
In this lecture, the professor discussed Marginal & (ir)relevant operators, Standard Model as and EFT, and started topic of field redefinitions.
Lecture 3
Field Redefinitions
Play Video		 Field Redefinitions
In this lecture, the professor finished field redefinitions, discussed loops, regularization and the impact on power counting.
Lecture 4
Matching and Decoupling
Play Video		 Matching and Decoupling
In this lecture, the professor discussed alphas(mu) and integrating out massive particles in MSbar, and Electroweak Hamiltonian Hw.
Lecture 5
Classic Operator Renormalization Group Equations (RGE)
Play Video		 Classic Operator Renormalization Group Equations (RGE)
In this lecture, the professor discussed renormalization group equations for Hw, running & scale variations, LL, NLL, etc., matching and scheme dependence.
Lecture 6
Chiral Lagrangians
Play Video		 Chiral Lagrangians
In this lecture, the professor discussed linear sigma model & field redefinitions, non-linear Lagrangian & symmetry breaking, Spurion analysis, and started topic of loops.
Lecture 7
Chiral Loops
Play Video		 Chiral Loops
In this lecture, the professor discussed loops in ChPT in dimensional regularization, naive dimensional analysis, momentum power counting theorem, SU3, and started topic of Heavy Quark Effective Theory.
II. Heavy Quark Effective Theory
Lecture 8
Heavy Quark Effective Theory (HQET)
Play Video		 Heavy Quark Effective Theory (HQET)
In this lecture, the professor discussed QCD to HQET, velocity labels, power counting, heavy quark symmetry, spectroscopy, covariant superfields, and started loops.
Lecture 9
HQET Matching & Power Corrections
Play Video		 HQET Matching & Power Corrections
In this lecture, the professor discussed detailed matching calculation, velocity dependent anomalous dimension and Wilson coefficients, power corrections and reparameterization invariance.
Lecture 10
HQET Examples
Play Video		 HQET Examples
In this lecture, the professor discussed heavy hadron masses, exclusive semileptonic decays, inclusive decays and OPE, pole mass versus short distance masses, and started topic of renormalons.
Lecture 11
Renormalons
Play Video		 Renormalons
In this lecture, the professor discussed bubble sum for heavy quark mass, removing renormalon ambiguities with scale R, R-RGE, and all orders formula for Lambda_QCD.
Lecture 12
More Renormalons
Play Video		 More Renormalons
In this lecture, the professor discussed solution of R-RGE, sum rule for renormalons, renormalons in OPEs, connecting Wilsonian and Continuum EFT.
Lecture 13
EFT with Fine Tuning
Play Video		 EFT with Fine Tuning
In this lecture, the professor discussed 2-nucleon nonrelativisitic EFT, bubble sums & effective range expansion, fine tuning from RGE flow between fixed pts, and power corrections.
Lecture 14
EFT with Fine Tuning Part 2
Play Video		 EFT with Fine Tuning Part 2
In this lecture, the professor discussed conformal invariance, SU(4) symmetry, calculations with the deuteron bound state, and started Soft-Collinear Effective theory (SCET).
III. Soft-Collinear Effective Theory
Lecture 15
Soft-Collinear Effective Theory (SCET) Introduction
Play Video		 Soft-Collinear Effective Theory (SCET) Introduction
In this lecture, the professor discussed degrees of freedom, light cone coordinates, SCETI & SCETII, jets and energetic hadrons, and collinear propagators.
Lecture 16
SCET Collinear Wilson Lines
Play Video		 SCET Collinear Wilson Lines
In this lecture, the professor discussed W from integrating out offshell propagators, and SCET Lagrangian.
Lecture 17
SCET Multipole Expansion
Play Video		 SCET Multipole Expansion
In this lecture, the professor discussed multipole expansion with label and residual momenta, label operators, and Wilson line identities.
Lecture 18
SCET Beyond Tree Level
Play Video		 SCET Beyond Tree Level
In this lecture, the professor discussed gauge symmetry, and reparameterization invariance.
Lecture 19
SCET Beyond Tree Level 2
Play Video		 SCET Beyond Tree Level 2
In this lecture, the professor discussed extension to multiple collinear directions, and ultrasoft-collinear factorization via field redefinitions.
Lecture 20
SCET Wilson Coefficients
Play Video		 SCET Wilson Coefficients
In this lecture, the professor discussed hard-collinear factorization, quark and gluon building blocks for operators, loops and IR divergences, and 0-bin.
Lecture 21
SCET Sudakov Logarithms
Play Video		 SCET Sudakov Logarithms
In this lecture, the professor discussed LL RGE for Sudakov summation, cusp anomalous dimension, convolutions in RGE, and started DIS factorization.
Lecture 22
SCET for DIS
Play Video		 SCET for DIS
In this lecture, the professor finished DIS factorization, 1-loop renormalization of PDFs, and convolutions in other processes.
Lecture 23
SCET for Dijets
Play Video		 SCET for Dijets
In this lecture, the professor discussed e+e- to dijets, factorize cross section with measurements, jet function, hemisphere soft function, peak/tail/fixed order regions, and all orders RGE.
Lecture 24
SCETII
Play Video		 SCETII
In this lecture, the professor discussed soft-collinear factorization, SCETI to SCETII matching, power counting theorems, and gamma* gamma → pi^0 example.
Lecture 25
SCET_2 Rapidity RGE
Play Video		 SCET_2 Rapidity RGE
In this lecture, the professor discussed B→D pi example, rapidity divergences, massive sudakov form factor, and rapidity RGE.
Lecture 26
SCET for LHC
Play Video		 SCET for LHC
In this lecture, the professor discussed Higgs pT distribution, Inclusive Drell-Yan, Threshold Drell-Yan, and Beam Thrust Drell-Yan.