Quintessence and Scalar Dark Matter in the Universe

Details Quintessence and Scalar Dark Matter in the Universe Quintessence and Scalar Dark Matter in the Universe

2000-04-24

arxiv.org/abs/astro-ph/0004332v2

Class.Quant.Grav.17:L75-L81,2000

Astronomy and Astrophysics

Astrophysics

4 pages REVTeX, 3 eps color figures. Minor changes and references updated. To appear in Classical and Quantum Gravity as a Let

Scientific paper

10.1088/0264-9381/17/13/101

Continuing with previous works, we present a cosmological model in which dark matter and dark energy are modeled by scalar fields $\Phi $ and $\Psi$, respectively, endowed with the scalar potentials $V(\Phi)=V_{o}[ \cosh {(\lambda \sqrt{\kappa_{o}}\Phi)}-1] $ and $\tilde{V}(\Psi)=\tilde{V_{o}}[ \sinh {(\alpha \sqrt{\kappa_{o}}\Psi)}] ^{\beta}$. This model contains 95% of scalar field. We obtain that the scalar dark matter mass is $m_{\Phi}\sim 10^{-26}eV.$ 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 $r_{c}\sim 1.2 kpc.$

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