Finite perturbations on perfect fluid Friedmann-Robertson-Walker models

Journal Article · Sat Apr 01 04:00:00 EST 1989 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/167271· OSTI ID:5628903

Diaz, M C; Gleiser, R J; Pullin, J A

This paper analyzes the behavior of a family of finite exact perturbations of Friedmann-Robertson-Walker cosmologies constructed with the inverse scattering technique of Belinskii and Zakharov (1978). The application of this method in a five-dimensional spacetime with a massless scalar field and a subsequent Kaluza-Klein dimensional reduction makes it possible to construct models with perfect fluid material content in four dimensions. The behavior of the energy momentum and Weyl tensors are studied as characterizations of the gravitational and material behaviors. The important case of solitonic perturbations on de Sitter backgrounds is also treated. 45 refs.

• Research Organization: Cordoba Universidad Nacional (Argentina); Pittsburgh Univ., PA (USA)
• OSTI ID: 5628903
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 339; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTROPHYSICS
COSMOLOGY
FLUIDS
GRAVITATIONAL FIELDS
MANY-DIMENSIONAL CALCULATIONS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MINKOWSKI SPACE
PERTURBATION THEORY
QUASI PARTICLES
SCATTERING
SOLITONS
SPACE
SPACE-TIME
TENSORS
UNIVERSE