Cosmological analytic solutions with reduced relativistic gas

Abstract

In this paper one examine analytical solutions for flat and non-flat universes composed by four components namely hot matter (ultra-relativistic), warm matter (relativistic), cold matter (non-relativistic) and cosmological constant. The warm matter is treated as a reduced relativistic gas and the other three components are treated in the usual way. The solutions achieved contains one, two or three components of which one component is of warm matter type. A solution involving all the four components was not found.

12 pages, 1 figure, accepted by MPLA

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• Cosmic anisotropy with Reduced Relativistic Gas
• Theoretical foundations of the reduced relativistic gas in the cosmological perturbed context
• Too hot to handle? Analytic solutions for massive neutrino or warm dark matter cosmologies
• Analytical warm dark matter power spectrum on small scales
• Take up the challenge for a single field inflation after BICEP2