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.
|Journal||General Relativity and Gravitation|
|Publication status||Published - 1 Sep 2004|
- Coincidence problem
- Dark energy
- Mathematical cosmology
- Tachyon field