Srednicki — Quantum Field Theory · Problem 60.4

Canonical Quantization of Scalar Fields — Mark Srednicki

Physics — QFT · spinor-helicity-reference-momentum-independence

Problem

a) Show explicitly that you would get the same result as eq. (60.31) if you set

q_4 = p_1

in eq. (60.29). b) Show explicitly that you would get the same result as eq. (60.31) if you set

q_4 = p_2

in eq. (60.29).