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

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

References in corpus (4)

• Dynamics of dark energy
• The new form of the equation of state for dark energy fluid and accelerating universe
• The oscillating dark energy: future singularity and coincidence problem
• Crossing of the w=-1 barrier in viscous modified gravity

Cited by in corpus (13)

• Modified f(R) gravity from scalar-tensor theory and inhomogeneous EoS dark energy
• A FRW Dark Fluid with a Non-Linear Inhomogeneous Equation of State
• Archimedean-type force in a cosmic dark fluid: I. Exact solutions for the late-time accelerated expansion
• Archimedean-type force in a cosmic dark fluid: II. Qualitative and numerical study of a multistage Universe expansion
• Interaction between scalar field and ideal fluid with inhomogeneous equation of state
• Parametrizing the transition to the phantom epoch with Supernovae Ia and Standard Rulers
• Hamiltonian formalism in Friedmann cosmology and its quantization
• Cosmological Boundary Flux Parameter
• Reconstruction from scalar-tensor theory and the inhomogeneous equation of state in f(T) Gravity
• On Friedmann-Lema\^ıtre-Robertson-Walker cosmologies in non-standard gravity
• Specially Coupled Dark Energy in the Oscillating FRW Cosmology
• Statefinder analysis of universe models with a viscous cosmic fluid and a fluid with a non-linear equation of state
• Die Reissner-Nordström-Metrik in der Pseudokomplexen Allgemeinen Relativitätstheorie