Accession Number : AD0747505

Title :   Cosmological Models with Weakly Turbulent Fluctuations of the Metric Superimposed on a Homogeneous and Isotropic Background Metric.

Descriptive Note : Doctoral thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Jackson,John Philip

Report Date : JUN 1972

Pagination or Media Count : 146

Abstract : Uniform and isotropic mathematical models of the expanding universe usually predict an initial singularity of infinite mass density and space curvature. To study possible mechanisms which would avoid the occurance of these singularities, non-uniform cosmological models based on Einstein's field equations are investigated in which random perturbations of long wave lengths are superimposed on the Robinson-Walker metric of the unperturbed models. Techniques of fluid turbulence theory, used to describe random fields by a hierarchy of central moments of the random perturbations, are applied to describe the dynamics of these moments. For the case of small perturbations the hierarchy is truncated and solutions are found. (Author)

Descriptors :   (*ASTROPHYSICS, THEORY), QUANTUM THEORY, GRAVITY, PERTURBATION THEORY, FLUID FLOW, TENSOR ANALYSIS, REYNOLDS NUMBER, NAVIER STOKES EQUATIONS, MATHEMATICAL MODELS, TURBULENCE, THESES

Subject Categories : Astrophysics
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE