https://doi.org/10.1140/epjc/s10052-019-6852-y
Regular Article - Theoretical Physics
Linear and second-order geometry perturbations on spacetimes with torsion
1
Facultad de Ingeniería y Arquitectura, Universidad Arturo Prat, Iquique, Chile
2
Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, Chile
3
Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia
* e-mail: eduarodriguezsal@unal.edu.co
Received:
21
January
2019
Accepted:
1
April
2019
Published online:
13
April
2019
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.
© The Author(s), 2019
