Quintessential brane cosmology
arXiv:hep-th/0109038 · doi:10.1103/PhysRevD.65.044002
Abstract
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.
29 pages. LaTeX. 5 postscript figures included. v2 typos corrected and references added. Final version to appear in Phys.Rev.D
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