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COUPLED QUINTESSENCE IN A POWER-LAW CASE AND THE COSMIC COINCIDENCE PROBLEM

XIN ZHANG

Institute of High Energy Physics, Chinese Academy of Sciences, P. O. Box 918(4), 100039 Beijing, China

https://doi.org/10.1142/S0217732305017597Cited by:134 (Source: Crossref)

Abstract

The problem of the cosmic coincidence is a longstanding puzzle. This conundrum may be solved by introducing a coupling between the two dark sectors. In this letter, we study a coupled quintessence scenario in which the scalar field evolves in a power law potential and the mass of dark matter particles depends on a power law function of ϕ. It is shown that this scenario has a stable attractor solution and can thus provide a natural solution to the cosmic coincidence problem.

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