Anisotropic cosmological models with nonminimally coupled magnetic field

Journal Article · Wed Jun 15 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.124014· OSTI ID:20709558

Balakin, Alexander B; Zimdahl, Winfried ^[1]

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1. Department of General Relativity and Gravitation, Kazan State University, 420008 Kazan (Russian Federation)

Motivated by the structure of one-loop vacuum polarization effects in curved space-time we discuss a nonminimal extension of the Einstein-Maxwell equations. This formalism is applied to Bianchi I models with magnetic field. We obtain several exact solutions of the nonminimal system including those which describe an isotropization process. We show that there are inflationary solutions in which the cosmological constant is determined by the nonminimal coupling parameters. Furthermore, we find an isotropic de Sitter solution characterized by a 'screening' of the magnetic field as a consequence of the nonminimal coupling.

• OSTI ID: 20709558
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
COSMOLOGICAL CONSTANT
COSMOLOGICAL MODELS
COSMOLOGY
COUPLING
DE SITTER GROUP
EINSTEIN-MAXWELL EQUATIONS
EXACT SOLUTIONS
MAGNETIC FIELDS
SPACE-TIME
VACUUM POLARIZATION