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- Title
Warm-Polytropic Cosmology with and Without Bulk Viscosity.
- Authors
Saadat, Hassan
- Abstract
In this paper we consider warm-polytropic cosmology including bulk viscosity and study cosmological parameters. We can obtain effect of viscosity on the important cosmological parameters such as Hubble expansion, deceleration and scale factor parameters. We compare our results with observational data and fix our solution. We find that the bulk viscosity increases both energy density and Hubble expansion parameter.
- Subjects
POLYTROPIC processes; METAPHYSICAL cosmology; BULK viscosity; DATA analysis; HUBBLE'S law; ENERGY density
- Publication
International Journal of Theoretical Physics, 2014, Vol 53, Issue 12, p4188
- ISSN
0020-7748
- Publication type
Article
- DOI
10.1007/s10773-014-2170-1