Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-12-13
Proceedings of the Steklov Institute of Mathematics, 2011, Vol. 272, pp. 119-140
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Talk at the Int. Conf. "Gauge Fields. Yesterday, Today, Tomorrow" dedicated the 70-th anniversary of A. A. Slavnov, MIAN, Mosc
Scientific paper
We discuss cosmological models involving homogeneous and isotropic Yang-Mills (YM) fields. Such models were proposed recently as an alternative to scalar models of cosmic acceleration. There exists a unique SU(2) YM configuration (generalizable to larger gauge groups) whose energy-momentum tensor is homogeneous and isotropic in space. It is parameterized by a single scalar field with a quatric potential. In the case of the closed universe the coupled YM -- doublet Higgs system admits homogeneous and isotropic configurations too. While pure Einstein-Yang-Mills (EYM) cosmology with the standard conformally invariant YM action gives rise to the hot universe, Einstein-Yang-Mills-Higgs (EYMH) cosmology has a variety of regimes which include inflationary stages, bounces, and exhibits global cycling behavior reminiscent of the Multiverse developed in time. We also discuss other mechanisms of conformal symmetry breaking such as string-inspired Born-Infeld (BI) modification of the YM action or field-theoretical quantum corrections.
Davydov Evgeny A.
Gal'tsov Dmitry V.
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