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arXiv · 0712.0486

Halos of Unified Dark Matter Scalar Field

Daniele Bertacca·Nicola Bartolo·Sabino Matarrese
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Abstract

We investigate the static and spherically symmetric solutions of Einstein's equations for a scalar field with non-canonical kinetic term, assumed to provide both the dark matter and dark energy components of the Universe. In particular, we give a prescription to obtain solutions (dark halos) whose rotation curve v_c(r) is in good agreement with observational data. We show that there exist suitable scalar field Lagrangians that allow to describe the cosmological background evolution and the static solutions with a single dark fluid.

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Daniele Bertacca, Nicola Bartolo, Sabino Matarrese. 2007-12-05. Halos of Unified Dark Matter Scalar Field. https://doi.org/10.1088/1475-7516%2F2008%2F05%2F005

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