Anisotropic model of dark energy dominated universe with hybrid expansion law

Abstract

The paper deals with the study of the dynamics of Universe within the framework of a spatially homogeneous Bianchi-V space-time filled with a perfect fluid composed of non-interacting matter and dynamical dark energy components. We determine the Bianchi-V space-time by considering hybrid expansion law (HEL) for the average scale factor that yields power-law and exponential-law cosmologies in its special cases. In the HEL cosmology, the Universe exhibits transition from deceleration to acceleration. We find that the HEL Universe within the framework of Bianchi-V space-time is anisotropic at the early stages of evolution and becomes isotropic at late times. The dynamical dark energy in the HEL Bianchi-V Universe does not show departure from the usual cosmological constant at later times.

6 pages, 2 figures, 1 table; major revision done to obtain more general results; matches the version to be published in Gravitation and Cosmology

References in corpus (4)

• Dynamics of dark energy
• Observational constraints on Hubble constant and deceleration parameter in power-law cosmology
• Some Bianchi Type-V Models of Accelerating Universe with Dark Energy
• Delicate f(R) gravity models with disappearing cosmological constant and observational constraints on the model parameters

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• FLRW accelerating universe with interactive dark energy
• FRW dark energy cosmological model with hybrid expansion law
• Cosmological determination to the values of the prefactors in the logarithmic corrected entropy-area relation
• Note on Dark Energy and Cosmic Transit in a scale-invariance cosmology
• Cosmic Evolution of the Kantowski-Sachs Universe in the Context of a Bulk Viscous String in Teleparallel Gravity