Finite perturbations on Friedmann-Robertson-Walker models. [Of cosmology]

Journal Article · Tue Jul 01 00:00:00 EDT 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/164353· OSTI ID:6988514

Ibanez, J; Verdaguer, E

By dimensional reduction of solutions of Einstein's equations in five-dimensional vacuum, two metrics are derived which can be interpreted as finite cylindrical perturbations of the solitonic type on a radiative Friedmann-Robertson-Walker (FRW) cosmological background. A linear perturbative analysis is performed and is compared with the exact nonlinear results. The metrics are transformed to perfect fluid solutions representing finite soliton perturbations on a FRW background with stiff matter. One metric contains density modes, and the other includes the coupling between density and radiative modes. 30 references.

• Research Organization: Universitat Mallorca, Spain; Barcelona Universidad Autonoma, Spain
• OSTI ID: 6988514
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 306; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMOLOGICAL MODELS
COSMOLOGY
DENSITY
EIGENVALUES
EINSTEIN FIELD EQUATIONS
EQUATIONS
FIELD EQUATIONS
MATHEMATICAL MODELS
PERTURBATION THEORY
PHYSICAL PROPERTIES
SPACE-TIME