Conditions for spontaneous homogenization of the Universe
arXiv:1005.3009 · doi:10.1007/s10714-010-1020-6 10.1142/S0218271810018566
Abstract
The present-day Universe appears to be homogeneous on very large scales. Yet when the casual structure of the early Universe is considered, it becomes apparent that the early Universe must have been highly inhomogeneous. The current paradigm attempts to answer this problem by postulating the inflation mechanism However, inflation in order to start requires a homogeneous patch of at least the horizon size. This paper examines if dynamical processes of the early Universe could lead to homogenization. In the past similar studies seem to imply that the set of initial conditions that leads to homogenization is of measure zero. This essay proves contrary: a set of initial conditions for spontaneous homogenization of cosmological models can form a set of non-zero measure.
arXiv comment7 pages. Fifth Award in the 2010 Gravity Research Foundation essay competition
References in corpus (10)
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
- Three-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Temperature Analysis
- Inflationary Cosmology
- Local Voids as the Origin of Large-angle Cosmic Microwave Background Anomalies I
- The Covariant Approach to LRS Perfect Fluid Spacetime Geometries
- Local Voids as the Origin of Large-angle Cosmic Microwave Background Anomalies: The Effect of a Cosmological Constant
- Pressure gradients, shell crossing singularities and acoustic oscillations - application to inhomogeneous cosmological models
- On Spacetimes Admitting Shear-free, Irrotational, Geodesic Timelike Congruences
- Shear-free, Irrotational, Geodesic, Anisotropic Fluid Cosmologies