Anisotropic cosmological models with a perfect fluid and a $\Lambda$ term

Abstract

We consider a self-consistent system of Bianchi type-I (BI) gravitational field and a binary mixture of perfect fluid and dark energy given by a cosmological constant. The perfect fluid is chosen to be the one obeying either the usual equation of state, i.e., $p = ζ\ve$, with $\zeta \in [0,1]$ or a van der Waals equation of state. Role of the $\Lambda$ term in the evolution of the BI Universe has been studied.

8 pages, 8 Figures

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