EpsExpand
EpsExpand
is an option for EpsEvaluate
and other functions that use EpsEvaluate
internally. When set to False
, sums of momenta in the Eps
tensor will not be rewritten as a sum of Eps
tensors.
See also
Overview, EpsEvaluate.
Examples
LC[mu, nu][q1 + q2, p1 + p2]
EpsEvaluate[%]
ϵˉmunuq1+q2p1+p2
−ϵˉmunup1q1−ϵˉmunup1q2−ϵˉmunup2q1−ϵˉmunup2q2
LC[mu, nu][q1 + q2, p1 + p2]
EpsEvaluate[%, EpsExpand -> False]
ϵˉmunuq1+q2p1+p2
−ϵˉmunup1+p2q1+q2