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Letter: Exact Solutions for the Interacting Tachyonic–Dark Matter System |
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| Authors: | Ramón Herrera Diego Pavón Winfried Zimdahl |
| Institution: | (1) Instituto de Física, Pontificia Universidad Católica de Valparaíso, Avenida Brasil 2950, Casilla 4059, Valparaíso, Chile;(2) Departamento de Física, Facultad de Ciencias, Universidad Autónoma de Barcelona, 08193 Bellaterra (Barcelona), Spain;(3) Institut für Theoretische Physik, Universität zu Köln, 50937 Köln, Germany |
| Abstract: | 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. |
| Keywords: | Mathematical cosmology Dark energy Tachyon field Coincidence problem |
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