FourVector

Description

FourVector[p, μ] is the four-dimensional vector p with Lorentz index μ. A vector with space-time Dimension D is obtained by supplying the option Dimension -> D.

See also:  FV, FVD, Pair.

Examples

FourVector[p, μ]

FourVector[p - q, μ]

StandardForm[FourVector[p, μ]]

StandardForm[FourVector[p, μ, Dimension -> D]]

StandardForm[FCE[FourVector[p, μ]]]

There is no special function to expand momenta in FourVector. Since FourVector is turned into Pair internally ExpandScalarProduct may be used.

ExpandScalarProduct[FourVector[p - q, μ]]