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arXiv · 1204.5938

Exact solutions of a Flat Full Causal Bulk viscous FRW cosmological model through factorization

O. Cornejo-Pérez·J. A. Belinchón
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Abstract

We study the classical flat full causal bulk viscous FRW cosmological model through the factorization method. The method shows that there exists a relationship between the viscosity parameter $s$ and the parameter $γ$ entering the equations of state of the model. Also, the factorization method allows to find some new exact parametric solutions for different values of the viscous parameter $s$. Special attention is given to the well known case $s=1/2$, for which the cosmological model admits scaling symmetries. Furthermore, some exact parametric solutions for $s=1/2$ are obtained through the Lie group method.

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O. Cornejo-Pérez, J. A. Belinchón. 2013-01-24. Exact solutions of a Flat Full Causal Bulk viscous FRW cosmological model through factorization. https://doi.org/10.1142/s0218271813500314

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