FCShowEpsilon
FCShowEpsilon[expr]
substitutes SMP["Delta"]
with 1/Epsilon - EulerGamma + Log[4 Pi]
.
See also
Overview, FCHideEpsilon.
Examples
SMP["Delta"]
FCShowEpsilon[%]
Δ
ε1−γ+log(4π)
SMP["Delta_UV"]
FCShowEpsilon[%]
ΔUV
εUV1−γ+log(4π)
SMP["Delta_IR"]
FCShowEpsilon[%]
ΔIR
εIR1−γ+log(4π)