DARK ENERGY MODELS WITH VARIABLE EQUATION OF STATE PARAMETER-Reference-Cited by-同舟云学术

DARK ENERGY MODELS WITH VARIABLE EQUATION OF STATE PARAMETER

Published:2010-04 Issue:04 Volume:19 Page:475-487
ISSN:0218-2718
Container-title:International Journal of Modern Physics D
language:en
Short-container-title:Int. J. Mod. Phys. D

Author:

MUKHOPADHYAY UTPAL¹,RAY SAIBAL²,RAHAMAN FAROOK³

Affiliation:

1. Satyabharati Vidyapith, Barasat, North 24 Parganas, Kolkata 700 126, West Bengal, India

2. Department of Physics, Government College of Engineering & Ceramic Technology, Kolkata 700 010, West Bengal, India

3. Department of Mathematics, Jadavpur University, Kolkata 700 032, West Bengal, India

Abstract

Two phenomenological variable Λ models, viz.Λ ~ (ȧ/a)2 and Λ ~ ρ, have been studied under the assumption that the equation of state parameter ω is a function of time. The selected Λ models are found to be equivalent both in four and five dimensions. The possibility of signature flip of the deceleration parameter is also shown.

Publisher

World Scientific Pub Co Pte Lt

Subject

Space and Planetary Science,Astronomy and Astrophysics,Mathematical Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218271810016488

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