Some Bianchi type generalized ghost piligrim dark energy models in general relativity

In this paper, we consider Bianchi type- III , V and VI 0 space-times filled with generalized ghost pilgrim dark energy (GGPDE) in general relativity. Here we assume the anisotropic distribution of GGPDE by introducing skewness parameters. To get deterministic solutions, we consider the scale factor...

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Bibliographic Details
Published in:Astrophysics and space science 2016-04, Vol.361 (4), p.1, Article 142
Main Authors: Santhi, M. Vijaya, Aditya, Y., Rao, V. U. M.
Format: Article
Language:English
Subjects:
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Dark energy
Gravity
Mathematical models
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
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Summary:In this paper, we consider Bianchi type- III , V and VI 0 space-times filled with generalized ghost pilgrim dark energy (GGPDE) in general relativity. Here we assume the anisotropic distribution of GGPDE by introducing skewness parameters. To get deterministic solutions, we consider the scale factor a ( t ) = ( t n e t ) 1 k , so called hybrid expansion, which yields a time dependent deceleration parameter, and exhibits a transition of the Universe from early decelerated phase to the recent accelerating phase. To describe the behavior of the obtained models we construct equation of state ( ω Λ ), squared sound speed ( v s 2 ) parameters and ω Λ – ω ˙ Λ , r – s planes. It is worth mentioning here that the analysis of evolution parameters supports the concept of pilgrim dark energy (PDE). Also, these models remain stable for PDE parameter β = − 0.5 . Moreover, the cosmological planes correspond to Λ CDM limit as well as different well-known dark energy models.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-016-2731-2