Standard Model and Beyond · Problem 3.24

Gauge Theories

Physics — Particle Physics · sum-invariant-sun-not-un

Problem

Prove that the operator

\epsilon^{\alpha_1 \cdots \alpha_m} \psi_{\alpha_1 \cdots \alpha_m}

in (3.120) is invariant under

SU(m)

but not under

U(m)