Cosmological Bardeen-Cooper-Schrieffer condensate as dark energy

Details Cosmological Bardeen-Cooper-Schrieffer condensate as dark energy Cosmological Bardeen-Cooper-Schrieffer condensate as dark energy

2009-06-28

arxiv.org/abs/0906.5161v3

Phys.Rev.D81:043511,2010; Erratum-ibid.D81:069902,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

17 pages, 3 figures. v2: discussion improved, figure and references added, results unchanged; v3: typo and figure corrections

Scientific paper

10.1103/PhysRevD.81.043511

We argue that the occurrence of late-time acceleration can conveniently be described by first-order general relativity covariantly coupled to fermions. Dark energy arises as a Bardeen-Cooper-Schrieffer condensate of fermions which forms in the early universe. At late times, the gap and chemical potential evolve to have an equation of state with effective negative pressure, thus naturally leading to acceleration.

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