Field Redefinitions 
Field Redefinitions
by MIT / Iain Stewart
Video Lecture 3 of 26
Copyright Information: Iain Stewart. 8.851 Effective Field Theory, Spring 2013. (Massachusetts Institute of Technology: MIT OpenCourseWare), (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 finished field redefinitions, discussed loops, regularization and the impact on power counting.

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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