Equation of state and singularities in FLRW cosmological models

Details Equation of state and singularities in FLRW cosmological models Equation of state and singularities in FLRW cosmological models

2010-01-18

arxiv.org/abs/1001.3051v1

J. Phys.: Conf. Ser. 229, 012037 (2010)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, jpconf.cls, to appear in Proceedings of Spanish Relativity Meeting 2009 (ERE 09), Bilbao

Scientific paper

10.1088/1742-6596/229/1/012037

We consider FLRW cosmological models with standard Friedmann equations, but leaving free the equation of state. We assume that the dark energy content of the universe is encoded in an equation of state $p=f(\rho)$, which is expressed with most generality in the form of a power expansion. The inclusion of this expansion in Friedmann equations allows us to construct a perturbative solution and to relate the coefficients of the equation of state with the formation of singularities of different types.

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