ToLarin[exp] substitutes γμγ5\gamma^{\mu} \gamma^5γμγ5 with −I6εμνλσγνγλγσ-\frac{I}{6}\varepsilon^{\mu \nu \lambda \sigma } \gamma^{\nu } \gamma^{\lambda} \gamma^{\sigma }−6Iεμνλσγνγλγσ.
Overview, Eps, DiracGamma.
GAD[\[Mu], \[Nu]] . GA[5] ToLarin[%]
γμ.γν.γˉ5\gamma ^{\mu }.\gamma ^{\nu }.\bar{\gamma }^5γμ.γν.γˉ5
−16iγμ.γdu19.γdu20.γdu21ϵν du19 du20 du21-\frac{1}{6} i \gamma ^{\mu }.\gamma ^{\text{du19}}.\gamma ^{\text{du20}}.\gamma ^{\text{du21}} \overset{\text{}}{\epsilon }^{\nu \;\text{du19}\;\text{du20}\;\text{du21}}−61iγμ.γdu19.γdu20.γdu21ϵνdu19du20du21