Unified Dark Matter Scalar Field Models

Details Unified Dark Matter Scalar Field Models Unified Dark Matter Scalar Field Models

2010-08-03

arxiv.org/abs/1008.0614v4

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

57 pages, 6 figures, LaTeX file. Typos corrected; Added References; Revised according to reviewer's suggestions; Invited Revie

Scientific paper

10.1155/2010/904379

In this work we analyze and review cosmological models in which the dynamics of a single scalar field accounts for a unified description of the Dark Matter and Dark Energy sectors, dubbed Unified Dark Matter (UDM) models. In this framework, we consider the general Lagrangian of k-essence, which allows to find solutions around which the scalar field describes the desired mixture of Dark Matter and Dark Energy. We also discuss static and spherically symmetric solutions of Einstein's equations for a scalar field with non-canonical kinetic term, in connection with galactic halo rotation curves.

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