An exact model of conformal quintessence

Details An exact model of conformal quintessence An exact model of conformal quintessence

2004-01-04

arxiv.org/abs/astro-ph/0401016v1

Phys.Rev. D69 (2004) 083511

Astronomy and Astrophysics

Astrophysics

19 pages, RevTeX 4, 4 figures, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.69.083511

A non--minimally coupled quintessence model is investigated and the conditions for a stationary solution to the coincidence problem are obtained. For a conformally coupled scalar field and dissipative matter, a general solution possessing late acceleration is found. It fits rather well the high redshift supernovae data and gives a good prediction of the age of the Universe. Likewise, the cold dark matter component dominates the cosmological perturbations at late times albeit they decrease with expansion.

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