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Effects of Bulk Viscosity on Cosmological Evolution

Pimentel L O·Diaz-Rivera L M
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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.

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Pimentel L O, Diaz-Rivera L M. 1994-11-29. Effects of Bulk Viscosity on Cosmological Evolution. https://doi.org/10.1007/bf02722842

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