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arXiv · 0803.2288

A Note on the Generalized Friedmann Equations for a Thick Brane

Samad Khakshournia
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Abstract

Within our thick brane approach previously used to obtain the cosmological evolution equations on a thick brane embedded in a five-dimensional Schwarzschild Anti-de Sitter spacetime it is explicitly shown that the consistency of these equations with the energy conservation equation requires that, in general, the thickness of the brane evolves in time. This varying brane thickness entails the possibility that both Newton's gravitational constant $G$ and the effective cosmological constant $Λ_4$ are time dependent.

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Samad Khakshournia. 2008-03-15. A Note on the Generalized Friedmann Equations for a Thick Brane. https://doi.org/10.1007/s10714-007-0578-0

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