FeynGrav 4.0
arXiv:2510.17320 · doi:10.1016/j.cpc.2026.110199
Abstract
We present the new version of FeynGrav, a package that provides a set of tools to work with Feynman rules for gravity models. The new version addresses two principal issues and includes changes that improve user experience. Firstly, we present a more sophisticated implementation of the BRST formalism for general relativity and quadratic gravity, which results in a finite set of interaction rules between ghosts and gravitons. We also implement a realisation of a higher derivative gauge fixing term for quadratic gravity. Secondly, we implement Feynman rules for Cheung-Remmen variables. These variables present the general relativity action in a polynomial form and produce a finite set of Feynman rules. Lastly, we introduce some minor quality-of-life changes to the package to improve the user experience.
arXiv commentThe package is available in open-access https://github.com/BorisNLatosh/FeynGrav/tree/v4.0_stable
References in corpus (25)
- General relativity as an effective field theory: The leading quantum corrections
- New Developments in FeynCalc 9.0
- FeynCalc 9.3: New features and improvements
- Some remarks on high derivative quantum gravity
- Consistent Spin-Two Coupling and Quadratic Gravitation
- Tidal Effects in the Post-Minkowskian Expansion
- Classical Gravitational Scattering at from Feynman Diagrams
- FeynCalc 10: Do multiloop integrals dream of computer codes?
- Renormalization group in super-renormalizable quantum gravity
- Gravitational interaction to one loop in effective quantum gravity
- Hidden Simplicity of the Gravity Action
- Feynman rules and beta-function for the BF Yang-Mills Theory
- The Two-Loop Four-Graviton Scattering Amplitudes
- BRST and Anti-BRST Symmetries in Perturbative Quantum Gravity
- Graviton particle statistics and coherent states from classical scattering amplitudes
- An Algorithm to Simplify Tensor Expressions
- Perturbative Calculations with the First Order Form of Gauge Theories
- FeynGrav 2.0
- Radiative Corrections and the Palatini Action
- General Procedure of Gauge Fixings and Ghosts
- The One-Loop Divergences of the Linear Gravity with the Torsion Terms
- Structural identities in the first order formulation of quantum gravity
- Consistency Conditions for the First-Order Formulation of Yang-Mills Theory
- FeynGrav 3.0
- Equivalence of first and second order formulations of the Einstein-Hilbert theory