A tracker solution to the cold dark matter cosmic coincidence problem

Details A tracker solution to the cold dark matter cosmic coincidence problem A tracker solution to the cold dark matter cosmic coincidence problem

1999-06-29

arxiv.org/abs/astro-ph/9906481v1

Phys.Lett.B459:570-574,1999

Astronomy and Astrophysics

Astrophysics

8 pages, 2 eps figures, use epsfig.sty, accepted for publication in Physics Letters B

Scientific paper

10.1016/S0370-2693(99)00707-8

Recently, we introduced the notion of "tracker fields," a form of quintessence which has an attractor-like solution. Using this concept, we showed how to construct models in which the ratio of quintessence to matter densities today is independent of initial conditions. Here we apply the same idea to the standard cold dark matter component in cases where it is composed of oscillating fields. Combining these ideas, we can construct a model in which quintessence, cold dark matter, and ordinary matter all contribute comparable amounts to the total energy density today irrespective of initial conditions.

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