Dark energy interacting with neutrinos and dark matter: a phenomenological theory

Details Dark energy interacting with neutrinos and dark matter: a phenomenological theory Dark energy interacting with neutrinos and dark matter: a phenomenological theory

2007-04-03

arxiv.org/abs/0704.0371v1

Gen.Rel.Grav.39:965-972,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, 5 figures. To appear in GRG

Scientific paper

10.1007/s10714-007-0428-0

A model for a flat homogeneous and isotropic Universe composed of dark energy, dark matter, neutrinos, radiation and baryons is analyzed. The fields of dark matter and neutrinos are supposed to interact with the dark energy. The dark energy is considered to obey either the van der Waals or the Chaplygin equations of state. The ratio between the pressure and the energy density of the neutrinos varies with the red-shift simulating massive and non-relativistic neutrinos at small red-shifts and non-massive relativistic neutrinos at high red-shifts. The model can reproduce the expected red-shift behaviors of the deceleration parameter and of the density parameters of each constituent.

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