Gauge/frame invariant variables for the numerical relativity study of cosmological spacetimes
General Relativity and Quantum Cosmology
2023-06-30 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
To numerically evolve the full Einstein equations (or modifications thereof), simulations of cosmological spacetimes must rely on a particular formulation of the field equations combined with a specific gauge/frame choice. Yet truly physical results cannot depend on the given formulation or gauge/frame choice. In this paper, we present a resolution of the gauge problem and, as an example, numerically implement it to evaluate our previous work on contracting spacetimes.
Keywords
Cite
@article{arxiv.2304.07616,
title = {Gauge/frame invariant variables for the numerical relativity study of cosmological spacetimes},
author = {Anna Ijjas},
journal= {arXiv preprint arXiv:2304.07616},
year = {2023}
}
Comments
22 pages, 8 figures; v2: typos corrected