General Relativity and Quantum Cosmology
[Submitted on 29 Nov 2007 (v1), last revised 5 Jan 2010 (this version, v3)]
Title:Dark Energy Models With Variable Equation Of State Parameter
View PDFAbstract: Two variable $\Lambda$ models, viz. $\Lambda \sim (\dot a/a)^2$ and $\Lambda \sim \rho$ have been studied under the assumption that the equation of state parameter $\omega$ is a function of time. The selected $\Lambda$ models are found to be equivalent both in four and five dimensions. The possibility of signature flip of the deceleration parameter is also shown.
Submission history
From: Saibal Ray [view email][v1] Thu, 29 Nov 2007 19:23:06 UTC (17 KB)
[v2] Wed, 18 Nov 2009 11:44:17 UTC (853 KB)
[v3] Tue, 5 Jan 2010 11:47:25 UTC (853 KB)
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