PolarizationSum

Description

PolarizationSum[ mu,nu, ... ] defines (as abbreviations) several polarization sums. The first two arguments are the interpreted as Lorentz indices, all further ones are momenta. PolarizationSum performs no calculations.

Options[PolarizationSum]

See also:  Polarization.

Examples

PolarizationSum[μ, ν]

PolarizationSum[μ, ν, k]

PolarizationSum[μ, ν, k, n]

PolarizationSum[μ, ν, k, (Subscript[p, 1]) - (Subscript[p, 2])]