Initial conditions for anisotropic extended-type inflationary universes

Journal Article · Fri May 15 00:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.3386· OSTI ID:7114161

del Campo, S ^[1]

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1. Instituto de Fisica, Universidad Catolica de Valparaiso, Avenida Brasil 2950, Valparaiso (Chile)

Recently, extended-type inflationary universe models have been proposed as an appealing approach for solving most of the cosmological puzzles'' that, in contrast with previous models, do not require a fine-tuning'' for the microphysical parameters present in the effective potential. These scenarios rest on a Brans-Dicke-type theory, where a nonminimal coupling of the form {ital f}({ital cphi}){ital R} is assumed, and it may or may not include a potential for the Brans-Dicke field. In its classical description, different extended inflationary universe scenarios are described, where anisotropy is taken into account. By using the Hartle-Hawking and the Vilenkin boundary conditions for the wave function of the Universe, the probability distributions for the initial states of these extended models in the case of a small anisotropy are determined and discussed.

• OSTI ID: 7114161
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 45:10; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
INFLATIONARY UNIVERSE
BOUNDARY CONDITIONS
BACKGROUND RADIATION
COSMOLOGICAL MODELS
EINSTEIN FIELD EQUATIONS
GENERAL RELATIVITY THEORY
HUBBLE EFFECT
MICROWAVE RADIATION
POTENTIALS
PROBABILITY
WAVE FUNCTIONS
ELECTROMAGNETIC RADIATION
EQUATIONS
FIELD EQUATIONS
FIELD THEORIES
FUNCTIONS
MATHEMATICAL MODELS
RADIATIONS
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)
661100 - Classical & Quantum Mechanics- (1992-)