DiracTrace

Description

DiracTrace[expr] is the head of Dirac Traces. Whether the trace is evaluated depends on the option DiracTraceEvaluate. Direct trace evaluation is performed by Tr. The argument expr may be a product of Dirac matrices or slashes separated by the Mathematica Dot ".".

Options[DiracTrace]

For comments regarding (γ^5)schemes see the notes for Tr.

See also:  Tr.

Examples

DiracTrace[GA[μ, ν]]

DiracTrace[GA[μ, ν, ρ, σ]]

%  /.  DiracTrace -> Tr

DiracTrace[GA[μ, ν, ρ, σ, 5], 
      DiracTraceEvaluate -> True]

DiracTrace[GA[μ, ν, ρ, σ, δ, τ, 5], 
      DiracTraceEvaluate -> True]

DiracTrace[GS[p, q, r, s]]

DiracTrace[GA[μ, ν], DiracTraceEvaluate -> True, 
      FCE -> True]

% // StandardForm