Physics Seminar
Date: Wednesday, 05 March 2025
Time: 3:30 PM
Venue: Lecture Hall 2
part 3: large N approximation for the linear sigma model in D=4
Hidenori Sonoda
Kobe University, Kobe, Hyōgo, Japan.
05-03-25

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Abstract

The exact renormalization group is a way to formulate quantum field theory in terms of a Wilson action with a UV cutoff. Taking the cutoff to zero, we obtain the effective action. Wilson actions are often invoked to appeal to our intuituion, but not well defined. Here I would like to show you how to construct them in terms of a well defined functional differential equation.