Bianchi Type I Universes with Causal Bulk Viscous Cosmological Fluid

Details Bianchi Type I Universes with Causal Bulk Viscous Cosmological Fluid Bianchi Type I Universes with Causal Bulk Viscous Cosmological Fluid

2001-10-15

arxiv.org/abs/gr-qc/0110069v1

Int.J.Mod.Phys.D11:447-462,2002

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, 5 figures, accepted for publication in International Journal of Modern Physics D

Scientific paper

10.1142/S0218271802001743

We consider the dynamics of a causal bulk viscous cosmological fluid filled constantly decelerating Bianchi type I space-time. The matter component of the Universe is assumed to satisfy a linear barotropic equation of state and the state equation of the small temperature Boltzmann gas. The resulting cosmological models satisfy the condition of smallness of the viscous stress. The time evolution of the relaxation time, temperature, bulk viscosity coefficient and comoving entropy of the dissipative fluid is also obtained.

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