Testing braneworlds with the binary pulsar
High Energy Physics - Theory
2009-11-10 v2 Astrophysics
General Relativity and Quantum Cosmology
Abstract
In this letter we calculate the emission of gravity waves by the binary pulsar in the framework of five dimensional braneworlds. We consider only spacetimes with one compact extra-dimension. We show that the presence of additional degrees of freedom, especially the 'gravi-scalar' leads to a modification of Einstein's quadrupole formula. We compute the induced change for the binary pulsar PSR 1913+16 where it amounts to about 20% which is by far excluded by present experimental data.
Keywords
Cite
@article{arxiv.hep-th/0305181,
title = {Testing braneworlds with the binary pulsar},
author = {Ruth Durrer and Philippe Kocian},
journal= {arXiv preprint arXiv:hep-th/0305181},
year = {2009}
}
Comments
13 pages no figures Published version. Appendix on gauge invariance of the used perturbation varables appended