Quintessence and scalar dark matter in the universe

@article{Matos2000QuintessenceAS,
  title={Quintessence and scalar dark matter in the universe},
  author={Tonatiuh Matos and L. Arturo Ure{\~n}a-L{\'o}pez},
  journal={Classical and Quantum Gravity},
  year={2000},
  volume={17}
}
Continuing on from previous works, we present a cosmological model in which dark matter and dark energy are modelled by scalar fields Φ and Ψ, respectively, endowed with the scalar potentials V(Φ) = Vo[cosh (λ√κoΦ) - 1] and (Ψ) = o[sinh (α√κoΨ)]β. This model contains a 95% scalar field. We obtain that the scalar dark matter mass is mΦ~10-26 eV. The solution obtained allows us to recover the success of standard cold dark matter. The implications on the formation of structure are reviewed. We… 

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References

SHOWING 1-10 OF 37 REFERENCES

Noninteracting dark matter

Since an acceptable dark matter candidate may interact only weakly with ordinary matter and radiation, it is of interest to consider the limiting case where the dark matter interacts only with

Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges

This paper presents a systematic treatment of the linear theory of scalar gravitational perturbations in the synchronous gauge and the conformal Newtonian (or longitudinal) gauge. It differs from

The Core Density of Dark Matter Halos: A Critical Challenge to the ΛCDM Paradigm?

We compare the central mass concentration of cold dark matter (CDM) halos found in cosmological N-body simulations with constraints derived from the Milky Way disk dynamics and from the Tully-Fisher

Cosmological consequences of a rolling homogeneous scalar field.

  • RatraPeebles
  • Physics
    Physical review. D, Particles and fields
  • 1988
It is argued that a number of models in which the energy density of the scalar field red-shifts in a specific manner are studied could reconcile the low dynamical estimates of the mean mass density with the negligibly small spatial curvature preferred by inflation.

Cosmic Concordance and Quintessence

We present a comprehensive study of the observational constraints on spatially flat cosmological models containing a mixture of matter and quintessence—a time-varying, spatially inhomogeneous

Cosmological imprint of an energy component with general equation of state

We examine the possibility that a significant component of the energy density of the Universe has an equation of state different from that of matter, radiation, or cosmological constant ({Lambda} ).

The observational case for a low-density Universe with a non-zero cosmological constant

OBSERVATIONS are providing progressively tighter constraints on cosmological models advanced to explain the formation of large-scale structure in the Universe. These include recent determinations of

Scalar field as dark matter in the universe

We investigate the hypothesis that the scalar field is the dark matter and the dark energy in the cosmos, which comprises about 95% of the matter of the Universe. We show that this hypothesis