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Full causal dissipative cosmologies with stiff matter

M. K. Mak·T. Harko
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Abstract

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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M. K. Mak, T. Harko. 2003-11-15. Full causal dissipative cosmologies with stiff matter. https://doi.org/10.1142/s0218271804004645

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