CONDITIONS FOR SPONTANEOUS HOMOGENIZATION OF THE UNIVERSE

被引：1

作者：

Bolejko, Krzysztof ^{[1
,2
]}

Stoeger, William R. ^{[3
]}

机构：

[1] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[2] Nicolaus Copernicus Astron Ctr, PL-00716 Warsaw, Poland

[3] Univ Arizona, Vatican Observ, Res Grp, Tucson, AZ 85721 USA

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2010年 / 19卷 / 14期

关键词：

MICROWAVE BACKGROUND ANOMALIES; COSMOLOGICAL MODELS; LOCAL VOIDS; SHEAR-FREE; INHOMOGENEITY; INFLATION; EVOLUTION; ORIGIN;

D O I：

10.1142/S0218271810018566

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 the contrary: a set of initial conditions for spontaneous homogenization of cosmological models can form a set of nonzero measure.

引用

页码：2405 / 2412

页数：8

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