Effects of Bulk Viscosity on Cosmological Evolution
General Relativity and Quantum Cosmology
2008-11-26 v1
Abstract
The effect of bulk viscisity on the evolution of the homogeneous and isotropic cosmological models is considered. Solutions are found, with a barotropic equation of state, and a viscosity coefficient that is proportional to a power of the energy density of the universe. For flat space, power law expansions, related to extended inflation are found as well as exponential solutions, related to old inflation; also a solution with expansion that is an exponential of an exponential of the time is found.
Cite
@article{arxiv.gr-qc/9411071,
title = {Effects of Bulk Viscosity on Cosmological Evolution},
author = {Pimentel L O and Diaz-Rivera L M},
journal= {arXiv preprint arXiv:gr-qc/9411071},
year = {2008}
}
Comments
8 pages, latex, no figures