Coupled Quintessence in a Power-Law Case and the Cosmic Coincidence Problem

Details Coupled Quintessence in a Power-Law Case and the Cosmic Coincidence Problem Coupled Quintessence in a Power-Law Case and the Cosmic Coincidence Problem

2005-03-03

arxiv.org/abs/astro-ph/0503072v2

Mod.Phys.Lett. A20 (2005) 2575

Astronomy and Astrophysics

Astrophysics

9 pages, 3 figures

Scientific paper

10.1142/S0217732305017597

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 $\phi$. 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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