Dark Energy Fluid with Time-Dependent, Inhomogeneous Equation of State
arXiv:gr-qc/0702089 · doi:10.1140/epjc/s10052-007-0278-7
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.
9 pages pdf, 4 figures. To appear in European Physical Journal C