FEYN CALC SYMBOL

DiracGamma


is the head of all Dirac matrices and slashes (in the internal representation). Use DiracMatrix (or GA, GAD) and DiracSlash (or GS, GSD) for manual (short) input. DiracGamma[x, 4] simplifies to DiracGamma[x]. DiracGamma[5] is gamma^5. DiracGamma[6] is (1+gamma^5)/2. DiracGamma[7] is (1-gamma^5)/2.

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Basic Examples  (1)Basic Examples  (1)

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A Dirac-slash, i.e., gamma^muq_mu, is displayed as gamma.q.
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