A. Zee, Quantum Field Theory in a Nutshell · Problem VI.4.3

Field Theory Redux

Physics — QFT

Problem

Calculate the pion-pion scattering amplitude up to quadratic order in the external momenta, using the linear σ\sigma model (2). Don't forget the Feynman diagram involving σ\sigma meson exchange. You should get the same result as in exercise VI.4.2.

Browse the problem library