Universe Acceleration in Brane World Models
C. Chiou-Lahanas, G. A. Diamandis, B. C. Georgalas
TL;DR
This paper investigates how a brane moving in a five-dimensional black hole background can produce an accelerating universe, aligning with current cosmological observations, and discusses the conditions on energy-momentum content for such models.
Contribution
It introduces a brane-world cosmology model with a five-dimensional black hole background that naturally leads to an accelerating universe after a decelerating phase.
Findings
Universe acceleration compatible with observations
Decelerating to accelerating transition demonstrated
Conditions on brane energy-momentum tensor discussed
Abstract
We examine the cosmology induced on a brane moving in the background of a five-dimensional black hole, solution of the string effective action. The evolution, determined by the Israel junction conditions is found to be compatible with an accelerating universe with the present day acceleration coming after a decelerating phase. The possible species of the energy-momentum tensor, localized on the brane, for these solutions to be valid are discussed.
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