Matching and Decoupling 
Matching and Decoupling
by MIT / Iain Stewart
Video Lecture 4 of 26
Copyright Information: Iain Stewart. 8.851 Effective Field Theory, Spring 2013. (Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed 31 Jan, 2015). License: Creative Commons BY-NC-SA
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Date Added: January 30, 2015

Lecture Description

In this lecture, the professor discussed alphas(mu) and integrating out massive particles in MSbar, and Electroweak Hamiltonian Hw.

Course Index

Course Description

Effective field theory is a fundamental framework to describe physical systems with quantum field theory. Part I of this course covers common tools used in effective theories: identifying degrees of freedom and symmetries; power counting expansions (dimensional and otherwise); field redefinitions; bottom-up and top-down effective theories; fine-tuned effective theories; matching and Wilson coefficients; reparameterization invariance; and advanced renormalization group techniques. Main examples are taken from particle and nuclear physics. Part II of this course is an in depth study of the Soft-Collinear Effective Theory (SCET), an effective theory for hard interactions in collider physics.

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