Supersymmetric Ward identity
= Supersymmetric Ward identity
{title2=$\langle QX\rangle=0$}
If an odd <graded derivation> $Q$ preserves the action and integration measure, then $\langle QX\rangle=0$ whenever boundary contributions and anomalies vanish. This applies to finite-dimensional <zero-dimensional supersymmetric field theories> as well as suitably regulated field integrals.