FeynCalc manual (development version)

FCLoopNonIntegerPropagatorPowersFreeQ

FCLoopNonIntegerPropagatorPowersFreeQ[int] checks if the integral contains propagators raised to noninteger (i.e. fractional or symbolic) powers.

See also

Overview, FCLoopRemoveNegativePropagatorPowers.

Examples

SFAD[{q + p, m^2, 2}] 
 
FCLoopNonIntegerPropagatorPowersFreeQ[FCI[%]]

1((p+q)2−m2+iη)2\frac{1}{((p+q)^2-m^2+i \eta )^2}

True\text{True}

SFAD[{q + p, m^2, n}] 
 
FCLoopNonIntegerPropagatorPowersFreeQ[FCI[%]]

((p+q)2−m2+iη)−n((p+q)^2-m^2+i \eta )^{-n}

False\text{False}

CFAD[{l, m^2, 1/2}] 
 
FCLoopNonIntegerPropagatorPowersFreeQ[FCI[%]]

1(l2+m2−iη)\frac{1}{\sqrt{(l^2+m^2-i \eta )}}

False\text{False}