FeynCalc manual (development version)

FCGetMetricSignature

FCGetMetricSignature[] returns the signature of the Minkowski metric used when working with Cartesian objects, such as CartesianPair, CartesianIndex, CartesianMomentum etc.

{1,-1} corresponds to (1,−1,−1,−1)(1,-1,-1,-1) and {-1,1} means (−1,1,1,1)(-1, 1, 1, 1).

See also

Overview, FCSetMetricSignature.

Examples

FCGetMetricSignature[]

{1,−1}\{1,-1\}