FeynCalc 10.2 and FeynHelpers 2: Multiloop calculations streamlined

Abstract: We present new versions of the Mathematica package FeynCalc and the FeynHelpers add-on that represent an important contribution to the collection of public codes for semi-automatic evaluation of multiloop Feynman diagrams. FeynHelpers enables interfacing between FeynCalc and selected programs routinely used in multiloop calculations such as QGRAF, FIRE, KIRA, FIESTA or pySecDec. In addition to that FeynCalc now supports parallelizing the execution of selected routines on multicore CPUs and can handle tensor integrals with zero Gram determinants where the traditional tensor reduction breaks down.