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Asymptotic expansions and nonlinear stability of power-law inflation models

Heinzle, M (Max Planck Institute)
Thursday 15 September 2005, 16:00-17:00

Seminar Room 1, Newton Institute


We show that homogeneous and isotropic solutions of the Einstein equations coupled to a nonlinear scalar field with a suitable exponential potential are stable under small nonlinear perturbations without any symmetry assumptions. Our proof makes use of recent results on the nonlinear stability of de Sitter spacetime and Kaluza-Klein reduction techniques. Ref.: Heinzle, J.M., Rendall, A.D., Power-law Inflation in Spacetimes without Symmetry,


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