Brane quintessence

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41 Citations (Scopus)

Abstract

We propose a new quintessence scenario in brane cosmology, assuming that a quintessence field Q is confined in our three-dimensional brane world. With a potential V(Q) = μα+4Q-α (α≥2), we find that the density parameter of the scalar field decreases as ΩQ∼a-4(α-2)/(α+2) in the epoch of quadratic energy density dominance, if α≤6. This attractor solution is followed by the usual tracking quintessence scenario after a conventional Friedmann universe is recovered. With an equipartition of initial energy density, we find a natural and successful quintessence model for α≳4.

Original languageEnglish
Article number123525
JournalPhysical Review D
Volume64
Issue number12
Publication statusPublished - 2001 Dec 15

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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