Linear and Second-order Geometry Perturbations on Spacetimes with Torsion
General Relativity and Quantum Cosmology
2019-05-01 v2 Mathematical Physics
math.MP
Abstract
In order to study gravitational waves in any realistic astrophysical scenario, one must consider geometry perturbations up to second order. Here, we present a general technique for studying linear and quadratic perturbations on a spacetime with torsion. Besides the standard metric mode, a "torsionon" perturbation mode appears. This torsional mode will be able to propagate only in a certain kind of theories.
Cite
@article{arxiv.1901.06400,
title = {Linear and Second-order Geometry Perturbations on Spacetimes with Torsion},
author = {Fernando Izaurieta and Eduardo Rodríguez and Omar Valdivia},
journal= {arXiv preprint arXiv:1901.06400},
year = {2019}
}
Comments
6 pages, no figures. v2: version accepted for publication in EPJC