Full causal dissipative cosmologies with stiff matter

Details Full causal dissipative cosmologies with stiff matter Full causal dissipative cosmologies with stiff matter

2003-11-15

arxiv.org/abs/gr-qc/0311050v1

Int.J.Mod.Phys.D13:273-280,2004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, 6 figures, to appear in Int. J. Mod. Phys. D

Scientific paper

10.1142/S0218271804004645

The general solution of the gravitational field equations for a full causal bulk viscous stiff cosmological fluid, with bulk viscosity coefficient proportional to the energy density to the power 1/4, is obtained in the flat Friedmann-Robertson-Walker geometry. The solution describes a non-inflationary Universe, which starts its evolution from a singular state. The time variation of the scale factor, deceleration parameter, viscous pressure, viscous pressure-thermodynamic pressure ratio, comoving entropy and Ricci and Kretschmann invariants is considered in detail.

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