Testing braneworlds with the binary pulsar

Details Testing braneworlds with the binary pulsar Testing braneworlds with the binary pulsar

2003-05-20

arxiv.org/abs/hep-th/0305181v2

Class.Quant.Grav. 21 (2004) 2127-2138

Physics

High Energy Physics

High Energy Physics - Theory

13 pages no figures Published version. Appendix on gauge invariance of the used perturbation varables appended

Scientific paper

10.1088/0264-9381/21/8/015

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.

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