Linear and second-order geometry perturbations on spacetimes with torsion

Izaurieta, Fernando (Aff2, 0000 0001 2298 9663, Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, Chile) ; Rodríguez, Eduardo  (Aff3, 0000 0001 0286 3748, Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia) ; Valdivia, Omar (Aff1, 0000 0000 9153 4251, Facultad de Ingeniería y Arquitectura, Universidad Arturo Prat, Iquique, Chile)

14 April 2019

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.

Published in: EPJC 79 (2019) 337
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-019-6852-y
License: CC-BY-3.0

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