The stability of Einstein static universe in the DGP braneworld

Details The stability of Einstein static universe in the DGP braneworld The stability of Einstein static universe in the DGP braneworld

2010-05-23

arxiv.org/abs/1005.4201v3

Physics Letters B 690 (2010) 229-232

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 2 figures, to appear in PLB

Scientific paper

The stability of an Einstein static universe in the DGP braneworld scenario is studied in this paper. Two separate branches denoted by $\epsilon=\pm1$ of the DGP model are analyzed. Assuming the existence of a perfect fluid with a constant equation of state, $w$, in the universe, we find that, for the branch with $\epsilon=1$, there is no a stable Einstein static solution, while, for the case with $\epsilon=-1$, the Einstein static universe exists and it is stable when $-1

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