Matchete`

Matchete`

CovariantLoop

CovariantLoop[lagrangian,{field₁, field₂, …}]

calculates the one-loop supertraces involving exactly the degrees of freedom specified in the field list.

Details and Options

The following options can be given:
EFTOrder 6 specifies the targeted order in the EFT power counting.

Mode Matching sets the kind of loop calculation performed.
The values of the Mode option are

	Matching	the function outputs the EFT matching contribution resulting from the trace(s).
	Divergence	the function returns the 1/ϵ pole of the trace(s). N.b. it is the divergence of a contribution to the effective action and minus the value of the counterterms needed to renormalize the theory.