Five Dimensional Cosmological Models in General Relativity

Abstract

A Five dimensional Kaluza-Klein space-time is considered in the presence of a perfect fluid source with variable G and $\Lambda$. An expanding universe is found by using a relation between the metric potential and an equation of state. The gravitational constant is found to decrease with time as $G\sim t^{-(1-\omega )}$ whereas the variation for the cosmological constant follows as $\Lambda \sim t^{-2}$, $\Lambda \sim (\dot{R}/R{)}^2$ and $\Lambda \sim \ddot{R}/R$ where $\omega$ is the equation of state parameter and $R$ is the scale factor.

13 pages, 4 figures, accepted in Int. J. Theor. Phys

References in corpus (14)

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Cited by in corpus (2)

• Statefinder Parameters for Different Dark Energy Models with Variable G Correction in Kaluza-Klein Cosmology
• Friedmann-like equations for High Energy Area of Universe