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Título

Quintessence in brane cosmology

Autor González-Díaz, Pedro F.
Fecha de publicación 2000
EditorElsevier
Citación Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 481: 353- 359 (2000)
ResumenIn order to reconcile the non conventional character of brane cosmology with standard Friedmann cosmology, we introduce in this paper a slowly-varying quintessence scalar field in the brane and analyse the cosmological solutions corresponding to some equations of state for the scalar field. Different compensation mechanisms between the cosmological constant in the bulk and the constant tension resulting from the combined effect of ordinary matter and the quintessence scalar field are derived or assumed. It has been checked that the Randall-Sundrum approach is not necessarily the best procedure to reconcile brane and standard cosmologies, and that there exists at least another compensating mechanism that reproduces a rather conventional behaviour for an accelerating universe. (C) 2000 Elsevier Science B.V.
URI http://hdl.handle.net/10261/97746
DOI10.1016/S0370-2693(00)00451-2
Identificadoresdoi: 10.1016/S0370-2693(00)00451-2
issn: 0370-2693
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