Homework 4: "Linear Sigma Model"

 

Important warning: DO NOT "CHEAT" by consulting solutions from last year's course. 

You would only cheat yourself if you did so, and you would (most likely) do badly on the exam.

 

I want you to go through each part of this problem by yourself.  If you must, collaborate

with other students to understand the basic physics, but WRITE YOUR OWN SOLUTIONS.

 

Only question on this homework: Peskin and Schroeder Problem 4.3: