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- Title
Gravitational waves in braneworlds after multi-messenger events.
- Authors
García-Aspeitia, Miguel A.; Escamilla-Rivera, Celia
- Abstract
The GW170817 event opened a new window to test modifications to General Relativity with the aim of discard or impose strong constraints in extra dimension theories of gravity. Concerning these theories, the Randall–Sundrum brane-world theory – 4+1 spacetime model where its covariant Einstein field equations are composed with new extra terms that comes from extra dimensions – is begin tested in the multi-messenger astronomy field. In the same context, the aim of this paper is to impose new constrictions through measurements of the time-delay between the gravitational and electromagnetic signals: GW170817 and the recent S190425z, over the free cosmological parameters of this modified model. We assume that Gravitational Waves travel along a shortcut on the extra dimension. In addition, we consider the standard Λ CDM model and perform a likelihood analysis in order to study effects like the H 0 tension in comparison to this extra-dimensional theory, obtaining a reduced H 0 value of the order of 0.2 % in the low energy limit of this theory.
- Subjects
GRAVITATIONAL waves; EINSTEIN field equations; DIMENSION theory (Algebra); GEODETIC astronomy
- Publication
European Physical Journal C -- Particles & Fields, 2020, Vol 80, Issue 4, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-020-7895-9