FCLoopSwitchEtaSign[exp, s]
switches the sign of in all integrals to s
, where s
can be +1
or -1
.
Notice to change the sign of the function pulls out a factor from the propagator.
Overview, FCTopology, FCLoopGetEtaSigns.
FAD
s are automatically converted to SFAD
s, since otherwise their prescription cannot be modified
[{p, m}]
FAD
[%, 1] FCLoopSwitchEtaSign
[{p, m}]
FAD
[%, -1] FCLoopSwitchEtaSign
[{p, m^2}]
SFAD
[%, -1] FCLoopSwitchEtaSign
[{p, m^2}]
CFAD
[%, 1] FCLoopSwitchEtaSign