Power-law Inflation in Spacetimes without Symmetry

Details Power-law Inflation in Spacetimes without Symmetry Power-law Inflation in Spacetimes without Symmetry

2005-06-29

arxiv.org/abs/gr-qc/0506134v1

Commun.Math.Phys. 269 (2007) 1-15

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages

Scientific paper

We consider models of accelerated cosmological expansion described by the Einstein equations coupled to a nonlinear scalar field with a suitable exponential potential. We show that homogeneous and isotropic solutions are stable under small nonlinear perturbations without any symmetry assumptions. Our proof is based on results on the nonlinear stability of de Sitter spacetime and Kaluza-Klein reduction techniques.

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