Dark Energy Fluid with Time-Dependent, Inhomogeneous Equation of State

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The four-dimensional Friedman flat universe, filled with an ideal fluid with a linear (oscillating) inhomogeneous equation of state (EoS) depending on time, is studied. The equations of motion are solved. It is shown that in some cases there appears a quasi-periodic universe, which repeats the cycles of phantom-type space acceleration. The appearance of future singularities resulting from various choices for the input parameters is discussed.
9 pages pdf, 4 figures. To appear in European Physical Journal C

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/188036

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0702089
 http://arxiv.org/abs/gr-qc/0702089
 Eur.Phys.J.C51:179-183,2007
 doi:10.1140/epjc/s10052-007-0278-7

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