TemporalMomentum[p]
is the head of the temporal component of a -momentum . The internal representation of the temporal component is TemporalMomentum[p]
.
TemporalMomentum
may appear only inside TemporalPair
s.
Overview, TemporalPair, ExplicitLorentzIndex.
[p] TemporalMomentum
[-q] // StandardForm
TemporalMomentum
(*-TemporalMomentum[q]*)
[p + q] TemporalMomentum
[p + q] // MomentumExpand // StandardForm
TemporalMomentum
(*TemporalMomentum[p] + TemporalMomentum[q]*)
[p + q] // MomentumExpand // MomentumCombine // StandardForm
TemporalMomentum
(*TemporalMomentum[p + q]*)