FeynCalc manual (development version)

Rename

Rename is an option for Contract. If set to True, dummy indices in Eps are renamed, using $MU[i].

See also

Overview, Contract.

Examples

LC[\[Mu], \[Nu], \[Rho], \[Sigma]] LC[\[Alpha], \[Nu], \[Rho], \[Sigma]] 
 
Contract[%, EpsContract -> False, Rename -> True]

$$\bar{\epsilon }^{\alpha \nu \rho \sigma } \bar{\epsilon }^{\mu \nu \rho \sigma }$$

$$\bar{\epsilon }^{\alpha \nu \rho \sigma } \bar{\epsilon }^{\mu \nu \rho \sigma }$$