Quintessential brane cosmology

Details Quintessential brane cosmology Quintessential brane cosmology

2001-09-05

arxiv.org/abs/hep-th/0109038v2

Phys.Rev.D65:044002,2002

Physics

High Energy Physics

High Energy Physics - Theory

29 pages. LaTeX. 5 postscript figures included. v2 typos corrected and references added. Final version to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.65.044002

We study a class of braneworlds where the cosmological evolution arises as the result of the movement of a three-brane in a five-dimensional static dilatonic bulk, with and without reflection symmetry. The resulting four-dimensional Friedmann equation includes a term which, for a certain range of the parameters, effectively works as a quintessence component, producing an acceleration of the universe at late times. Using current observations and bounds derived from big-bang nucleosynthesis we estimate the parameters that characterize the model.

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