Structural instability of Friedmann-Robertson-Walker cosmological models

Details Structural instability of Friedmann-Robertson-Walker cosmological models Structural instability of Friedmann-Robertson-Walker cosmological models

2008-10-28

arxiv.org/abs/0810.5080v2

Gen.Rel.Grav.41:1777-1794,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 4 figures in TeXCad, developed version of talk, presented at XIII Russian Gravitational Conference, June 2008, to be

Scientific paper

10.1007/s10714-008-0748-8

Cosmological singularity and asymptotic behaviour of scale factor of generalized cosmological models are analyzed in respect of their structural stability. It is shown, that cosmological singularity is structurally unstable for the majority of models with barotropic perfect fluid with strong energy condition. Inclusion of Lambda-term extends the set of structurally stable cosmological models.

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