4.3 Article

Conditions for spontaneous homogenization of the Universe

期刊

GENERAL RELATIVITY AND GRAVITATION
卷 42, 期 10, 页码 2349-2356

出版社

SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10714-010-1020-6

关键词

Homogenization; Early Universe; Pressure gradients; Viscosity

资金

  1. Polish U.S. Fulbright Commission [PPLS/03/09]
  2. Gravity Research Foundation

向作者/读者索取更多资源

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.

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