Non-Abelian condensates as alternative for dark energy

Details Non-Abelian condensates as alternative for dark energy Non-Abelian condensates as alternative for dark energy

2008-12-31

arxiv.org/abs/0901.0115v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Extended version of the talk given at 43-rd Rencontres de Moriond, La Thuile, March 15-22, 2008. 16 pages, moriond.tex

Scientific paper

We review basic features of cosmological models with large-scale classical non-Abelian Yang-Mills (YM) condensates. There exists a unique SU(2) YM configuration (generalizable to larger gauge groups) compatible with homogeneity and isotropy of the three-space which is parameterized by a single scalar field. In the past various aspects of Einstein-Yang-Mills (EYM) cosmology were discussed in the context of the Early Universe. Due to conformal invariance, solvable EYM FRW models exist both on the classical and quantum levels. To develop the YM model for dark energy one has to find mechanisms of the conformal symmetry breaking. We discuss the Born-Infeld generalization and some phenomenological models motivated by quantum corrections exploring possibility of transient DE and phantom regimes.

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