Comments on inhomogeneous anisotropic cosmology
Year: 2016
Type: preprint
Abstract: Recently a new no-global-recollapse argument is given for some inhomogeneous and anisotropic cosmologies that utilizes surface deformation by the mean curvature flow. In this note we discuss important properties of the mean curvature flow of spacelike surfaces in Lorentzian manifolds. The time evolution of the spatial scalar curvature that prevents recollapse is determined in normal coordinates, which shows the impact of inhomogeneities explicitly. Our analysis indicates a caveat in numerical solutions that give rise to inflation.
Source: arXiv (Cornell University)
Author: Ali Kaya
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2296454008