FeynCalc manual (development version)

CSISD

CSISD[p] can be used as input for D-1-dimensional \sigma ^i p^i with D-1-dimensional Cartesian vector p and is transformed into PauliSigma[CartesianMomentum[p,D-1],D-1] by FeynCalcInternal.

See also

Overview, PauliSigma.

Examples

CSISD[p]

\sigma \cdot p

CSISD[p] // FCI // StandardForm

(*PauliSigma[CartesianMomentum[p, -1 + D], -1 + D]*)

CSISD[p, q, r, s]

(\sigma \cdot p).(\sigma \cdot q).(\sigma \cdot r).(\sigma \cdot s)

CSISD[p, q, r, s] // StandardForm

(*CSISD[p] . CSISD[q] . CSISD[r] . CSISD[s]*)