FeynHelpers manual (development version)

PSDLoopPackage

PSDLoopPackage[name, loopIntegral, order] is an auxiliary function that creates input for pySecDec’s loop_package routine. The result is returned as a string.

PSDLoopPackage is used by PSDCreatePythonScripts when assembling the generation script.

See also

Overview, PSDCreatePythonScripts, PSDIntegrate, PSDLoopIntegralFromPropagators, PSDLoopRegions.

Examples

PSDLoopPackage["loopint", "li", 2]

loop_package(\nname = ’loopint’,\nloop_integral = li,\nrequested_orders = [2],\ndecomposition_method = ’geometric’\n)\text{loop$\_$package($\backslash $nname = 'loopint',$\backslash $nloop$\_$integral = li,$\backslash $nrequested$\_$orders = [2],$\backslash $ndecomposition$\_$method = 'geometric'$\backslash $n)}

PSDLoopPackage["loopint", "li", 0, PSDDecompositionMethod -> "iterative", 
  PSDAdditionalPrefactor -> "2", PSDContourDeformation -> False]

loop_package(\nname = ’loopint’,\nloop_integral = li,\nrequested_orders = [0],\ncontour_deformation = False,\nadditional_prefactor = ’2’,\ndecomposition_method = ’iterative’\n)\text{loop$\_$package($\backslash $nname = 'loopint',$\backslash $nloop$\_$integral = li,$\backslash $nrequested$\_$orders = [0],$\backslash $ncontour$\_$deformation = False,$\backslash $nadditional$\_$prefactor = '2',$\backslash $ndecomposition$\_$method = 'iterative'$\backslash $n)}