Abstract
Bianchi type V cosmological models are studied that contain a relativistic ideal Boltzmann gas. The effect of a cosmological constant upon the space-time geometry is also considered. In both high and low temperature limit the general solution of the Einstein gravitational field equations can be expressed in an exact closed parametric form. At final stages, depending on the presence or absence of the cosmological constant, cosmologies are driven to an isotropic inflationary open de Sitter type Universe or to an isotropic open Friedmann era.
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Harko, T., Mak, M. Exact Boltzmann-Gas Filled Bianchi Type V Space-Times. Astrophysics and Space Science 262, 315–335 (1998). https://doi.org/10.1023/A:1001822617649
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DOI: https://doi.org/10.1023/A:1001822617649