FeynGrav 2.0

On two body gravitational scattering within perturbative gravity

“…First and foremost, this paper provides an explicit example of FeynGrav usage for calculations within the perturbative quantum gravity. In the latest version, FeynGrav contains Feynman rules sufficient to describe quantum gravity within the standard model [16,17].…”

“…In [16], an algorithm constructing explicit expressions for such Feynman rules was found (see also [53][54][55]). The algorithm is implemented in the FeynGrav package [16,17] that extends the functionality of 'FeynCalc' [18,19,56]. All further calculations will be performed with FeynGrav.…”

“…We turn to the discussion of one-loop amplitudes. All the amplitude discussed below were calculated with FeynGrav [16,17]. They contain many terms; for instance, the expression for the one-loop vertex operator contains 11356 terms.…”

“…Consequently, calculations of off-shell amplitudes involving massive particles heavily rely on the standard Feynman rules. Recently developed computational package FeynGrav [16,17], which is based on widely used FeynCalc [18][19][20][21], provides a tool to operate with Feynman rules for gravity.…”

FeynGrav and Recent Progress in Computational Perturbative Quantum Gravity

“…The recent publications [24,25] created the desirable algorithm. It was implemented in a computational package "FeynGrav", created at the base of the widely used "Feyn-Calc" [26][27][28].…”