GRBoondi: A code for evolving Generalized Proca theories on arbitrary backgrounds

TL;DR

GRBoondi is a versatile numerical code that enables the simulation of Generalized Proca theories on arbitrary backgrounds, facilitating exploration of complex modified gravity models with ease.

Contribution

The paper introduces GRBoondi, a novel fixed-background numerical relativity code that allows flexible modifications to Proca equations on any background, advancing computational tools in modified gravity research.

Findings

Provides a unified interface for Generalized Proca theories

Enables arbitrary modifications to equations of motion

Facilitates simulations on diverse backgrounds

Abstract

While numerical simulations offer unparalleled precision and robustness in studying complex physical systems, their execution is often hindered by complexity, costliness, and time consumption due to the intricate equations involved. This challenge is already encountered in General Relativity, where non-flat spacetimes exacerbate the computational burden. This complexity is further intensified when dealing with additional degrees of freedom. To address this challenge head-on, we introduce GRBoondi, a groundbreaking fixed-background numerical relativity code designed to provide a unified interface for numerically solving Generalized Proca theories. GRBoondi grants users the ability to make arbitrary modifications to the Proca equations of motion on any background, providing a robust and versatile tool for exploring diverse classes of Generalized Proca theories. This letter serves as part of the submission of GRBoondi to the Journal of Open Source Software. For access to the code, please visit https://github.com/ShaunFell/GRBoondi.git.