Circular Orbits in Einstein-Gauss-Bonnet Gravity

Details Circular Orbits in Einstein-Gauss-Bonnet Gravity Circular Orbits in Einstein-Gauss-Bonnet Gravity

2008-10-07

arxiv.org/abs/0810.1177v1

Phys.Rev.D78:084038,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 4 figs, RevTex, Phys. Rev. D, in press

Scientific paper

10.1103/PhysRevD.78.084038

The stability under radial and vertical perturbations of circular orbits associated to particles orbiting a spherically symmetric center of attraction is study in the context of the n-dimensional: Newtonian theory of gravitation, Einstein's general relativity, and Einstein-Gauss-Bonnet theory of gravitation. The presence of a cosmological constant is also considered. We find that this constant as well as the Gauss-Bonnet coupling constant are crucial to have stability for $n>4$.

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