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arXiv · gr-qc/0702089

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

I. Brevik·O. G. Gorbunova·A. V. Timoshkin
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Abstract

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.

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I. Brevik, O. G. Gorbunova, A. V. Timoshkin. 2007-02-15. Dark Energy Fluid with Time-Dependent, Inhomogeneous Equation of State. https://doi.org/10.1140/epjc%2Fs10052-007-0278-7

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