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arXiv · 0711.4800

Dark Energy Models With Variable Equation Of State Parameter

Utpal Mukhopadhyay·Saibal Ray·Farook Rahaman
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Abstract

Two variable $Λ$ models, viz. $Λ\sim (\dot a/a)^2$ and $Λ\sim ρ$ 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.

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Utpal Mukhopadhyay, Saibal Ray, Farook Rahaman. 2010-01-05. Dark Energy Models With Variable Equation Of State Parameter. https://doi.org/10.1142/s0218271810016488

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