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Advances in Astronomy
Volume 2012 (2012), Article ID 509682, 13 pages
http://dx.doi.org/10.1155/2012/509682
Research Article

A Scalar Field Dark Matter Model and Its Role in the Large-Scale Structure Formation in the Universe

Departamento de Física, Instituto Nacional de Investigaciones Nucleares, Apdo. Postal 18-1027, 11801 México, DF, Mexico

Received 21 December 2011; Revised 14 March 2012; Accepted 26 March 2012

Academic Editor: Dario Nuñez

Copyright © 2012 Mario A. Rodríguez-Meza. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present a model of dark matter based on scalar-tensor theory of gravity. With this scalar field dark matter model we study the non-linear evolution of the large-scale structures in the universe. The equations that govern the evolution of the scale factor of the universe are derived together with the appropriate Newtonian equations to follow the nonlinear evolution of the structures. Results are given in terms of the power spectrum that gives quantitative information on the large-scale structure formation. The initial conditions we have used are consistent with the so-called concordance ΛCDM model.