Exact solutions for the interacting tachyonic-dark matter system

Details Exact solutions for the interacting tachyonic-dark matter system Exact solutions for the interacting tachyonic-dark matter system

2004-04-05

arxiv.org/abs/astro-ph/0404086v1

Gen.Rel.Grav. 36 (2004) 2161-2169

Astronomy and Astrophysics

Astrophysics

11 pages, no figues, to be published in Gen. Ralativ. Grav

Scientific paper

10.1023/B:GERG.0000038630.55301.

We find exact solutions leading to power law accelerated expansion for a
homogeneous, isotropic and spatially flat universe, dominated by an interacting
mixture of cold dark matter and a tachyonic field such that the ratio of the
energy densities of both components at late times is constant and no
coincidence problem arises.

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