Dark Energy and Dark Matter unification via superfluid Chaplygin gas

Details Dark Energy and Dark Matter unification via superfluid Chaplygin gas Dark Energy and Dark Matter unification via superfluid Chaplygin gas

2009-12-08

arxiv.org/abs/0912.1609v3

Phys.Lett.B686:211-215, 2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 3 figures

Scientific paper

10.1016/j.physletb.2010.02.035

A new model describing the dark sector of the universe is established. The model involves Bose-Einstein condensate (BEC) as dark energy (DE) and an excited state above it as dark matter (DM). The condensate is assumed to have a negative pressure and is embodied as an exotic fluid with Chaplygin equation of state. Excitations are described as a quasiparticle gas. It is shown that the model is not in disagreement with the current observations of the cosmic acceleration. The model predicts increase of the effective cosmological constant and a complete disappearance of the matter at the far future.

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