Can neutrino viscosity drive the late time cosmic acceleration?

Details Can neutrino viscosity drive the late time cosmic acceleration? Can neutrino viscosity drive the late time cosmic acceleration?

2008-06-23

arxiv.org/abs/0806.3666v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 3 figures

Scientific paper

In this paper it has been shown that the neutrino bulk viscous stresses can give rise to the late time acceleration of the universe. It is found that a number of spatially flat FRW models with a negative deceleration parameter can be constructed using neutrino viscosity and one of them mimics a $\Lambda$CDM model. This does not require any exotic dark energy component or any modification of gravity.

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