FeynCalc manual (development version)

TemporalPair

TemporalPair[ExplicitLorentzIndex[0], TemporalMomentum[p]] is a special pairing used in the internal representation to denote p^0, the temporal component of a 4-momentum p.

See also

Overview, TemporalPair, TC, ExplicitLorentzIndex.

Examples

TemporalPair[ExplicitLorentzIndex[0], TemporalMomentum[p]]

p^0

TemporalPair[ExplicitLorentzIndex[0], TemporalMomentum[p + q]] 
 
% // ExpandScalarProduct

(p+q)^0

p^0+q^0