MomentumCombine

Description

MomentumCombine[expr] is the inverse operation to MomentumExpand and ExpandScalarProduct. MomentumCombine combines also Pair`s.

See also: ExpandScalarProduct, Momentum, MomentumExpand.

Examples

Momentum[p] - 2 Momentum[q]  //  
        MomentumCombine  //  StandardForm

t1 = FV[p, μ]  +  2 FV[q, μ]

MomentumCombine[t1]

MomentumCombine[t1] // StandardForm

MomentumCombine[t1] // ExpandScalarProduct

StandardForm[%]

Clear[t1]