Lesson 9 Video Solution Problem 9 4 Srednicki

This is version 2 of a series of videos for a course on Quantum Field Theory. Links to my piazza sites are below: 8.323 Quantum Field Theory - A Students Perspective https://piazza.com/markweitzmans_wannabe_a_theoretical_physicist_school/other/8323 Course Term: Other Access Code: QFT PH200 Topics in Theoretical Physics https://piazza.com/markweitzmans_wannabe_a_theoretical_physicist_school/other/ph200 Course Term: Other Access Code: Ph200 PH 300 Group Theory in Physics https://piazza.com/markweitzmans_wannabe_a_theoretical_physicist_school/other/ph300 Course Term:Other Access Code: ph300.