Quintessence and Scalar Dark Matter in the Universe

T. Matos; L. A. Urena-Lopez

doi:10.1088/0264-9381/17/13/101

paper

Quintessence and Scalar Dark Matter in the Universe

arXiv:astro-ph/0004332 · doi:10.1088/0264-9381/17/13/101

Abstract

Continuing with previous works, we present a cosmological model in which dark matter and dark energy are modeled by scalar fields $Φ$ and $Ψ$ , respectively, endowed with the scalar potentials $V (Φ) = V_{o} [cosh (λ κ_{o} Φ) - 1]$ and $V ~ (Ψ) = V_{o} ~ [sinh (α κ_{o} Ψ)]^{β}$ . This model contains 95% of scalar field. We obtain that the scalar dark matter mass is $m_{Φ} \sim 1 0^{- 26} e V .$ The solution obtained allows us to recover the success of the standard CDM. The implications on the formation of structure are reviewed. We obtain that the minimal cutoff radio for this model is $r_{c} \sim 1.2 k p c .$

4 pages REVTeX, 3 eps color figures. Minor changes and references updated. To appear in Classical and Quantum Gravity as a Letter to the Editor. More information at http://www.fis.cinvestav.mx/~siddh/PHI/

Quintessence and Scalar Dark Matter in the Universe

Abstract

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