Power-law Inflation in Spacetimes without Symmetry
arXiv:gr-qc/0506134 · doi:10.1007/s00220-006-0133-y
Abstract
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.
16 pages
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