Nonlinear spinor field in Bianchi type-I cosmology: Inflation, isotropization, and late time acceleration

Journal Article · Thu Dec 14 23:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.124030· OSTI ID:20871497

Saha, Bijan ^[1]

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1. Laboratory of Information Technologies Joint Institute for Nuclear Research, Dubna 141980 Dubna, Moscow region (Russian Federation)

A self-consistent system of interacting nonlinear spinor and scalar fields within the scope of a Bianchi type-I cosmological model filled with perfect fluid is considered. Exact self-consistent solutions to the corresponding field equations are obtained. A role of the spinor field in the evolution of the Universe is studied. It is shown that the spinor field gives rise to an accelerated mode of expansion of the Universe. Early in the evolution, the spinor field nonlinearity generates an accelerated mode of expansion. The rapid growth of the Universe in this case results in the earlier isotropization. At the later evolution the acceleration of the Universe is provided with a spinor mass.

• OSTI ID: 20871497
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATION
COSMOLOGICAL MODELS
COSMOLOGY
EXACT SOLUTIONS
EXPANSION
FIELD EQUATIONS
IDEAL FLOW
NONLINEAR PROBLEMS
SCALAR FIELDS
SPINOR FIELDS
UNIVERSE