FeynCalc manual (development version)

FCHideEpsilon

FCHideEpsilon[expr] substitutes 1/Epsilon - EulerGamma + Log[4 Pi] with SMP["Delta"].

See also

Overview, FCShowEpsilon.

Examples

1/Epsilon + Log[4 Pi] - EulerGamma 
 
FCHideEpsilon[%]

1εγ+log(4π)\frac{1}{\varepsilon }-\gamma +\log (4 \pi )

Δ\Delta

1/EpsilonUV + Log[4 Pi] - EulerGamma 
 
FCHideEpsilon[%]

1εUVγ+log(4π)\frac{1}{\varepsilon _{\text{UV}}}-\gamma +\log (4 \pi )

ΔUV\Delta _{\text{UV}}

1/EpsilonIR + Log[4 Pi] - EulerGamma 
 
FCHideEpsilon[%]

1εIRγ+log(4π)\frac{1}{\varepsilon _{\text{IR}}}-\gamma +\log (4 \pi )

ΔIR\Delta _{\text{IR}}