Cosmological models with interacting components and mass-varying neutrinos

Details Cosmological models with interacting components and mass-varying neutrinos Cosmological models with interacting components and mass-varying neutrinos

2012-03-14

arxiv.org/abs/1203.3061v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 5 figures, to be published in Gravitation and Cosmology

Scientific paper

A model for a homogeneous and isotropic spatially flat Universe, composed of baryons, radiation, neutrinos, dark matter and dark energy is analyzed. We infer that dark energy (considered to behave as a scalar field) interacts with dark matter (either by the Wetterich model, or by the Anderson and Carroll model) and with neutrinos by a model proposed by Brookfield et al.. The latter is understood to have a mass-varying behavior. We show that for a very-softly varying field, both interacting models for dark matter give the same results. The models reproduce the expected red-shift performances of the present behavior of the Universe.

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