SPD

Description

SPD[a, b] denotes a D-dimensional scalar product. SPD[a, b] is transformed into ScalarProduct[a, b,Dimension->D] by FeynCalcInternal. SPD[p] is the same as SPD[p,p] (=(p^2)).

See also:  Calc, ExpandScalarProduct, ScalarProduct.

Examples

SPD[p, q]  +  SPD[q]

SPD[p - q, q + 2  p]

Calc[ SPD[p - q, q + 2  p] ]

ExpandScalarProduct[SPD[p - q]]

SPD[a, b] // StandardForm

SPD[a, b] // FCI // StandardForm

SPD[a, b] // FCI // FCE // StandardForm

FCE[ChangeDimension[SP[p, q],  D]] // StandardForm