Anisotropic cosmological models with perfect fluid and dark energy revisited

Details Anisotropic cosmological models with perfect fluid and dark energy revisited Anisotropic cosmological models with perfect fluid and dark energy revisited

2005-01-21

arxiv.org/abs/gr-qc/0501067v1

Int.J.Theor.Phys. 45 (2006) 952-964

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

RevTex, 9 pages, 8 figures

Scientific paper

10.1007/s10773-006-9089-0

We consider a self-consistent system of Bianchi type-I (BI) gravitational field and a binary mixture of perfect fluid and dark energy. The perfect fluid is taken to be the one obeying the usual equation of state, i.e., $p = \zeta \ve$, with $\zeta \in [0, 1]$ whereas, the dark energy is considered to be obeying a quintessence-like equation of state. Exact solutions to the corresponding Einstein equations are obtained. The model in consideration gives rise to a Universe which is spatially finite. Depending on the choice of problem parameters the Universe is either close with a space-time singularity, or an open one which is oscillatory, regular and infinite in time.

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