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Expanding Cosmologies in Brane Geometries

Myron Bander
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Abstract

Five dimensional gravity coupled, both in the bulk and on a brane, to a scalar Liouville field yields a geometry confined to a strip around the brane and with time dependent scale factors for the four geometry. In various limits known models can be recovered as well as a temporally expanding four geometry with a warp factor falling exponentially away from the brane. The effective theory on the brane has a time dependent Planck mass and ``cosmological constant''. Although the scale factor expands, the expansion is not an acceleration.

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Myron Bander. 2003-08-19. Expanding Cosmologies in Brane Geometries. https://doi.org/10.1103/physrevd.69.043505

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