FermionSpinSum

Description

FermionSpinSum[x] constructs the Traces out of squared ampliudes.

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See also: ComplexConjugate, DiracTrace, Tr.

Examples
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Notice that SpinorUBar and SpinorU are only input functions. Internally they are converted to Spinor objects.

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Converted from the Mathematica notebook FermionSpinSum.nb