A cyclic model of the universe

被引：378

作者：

Steinhardt, PJ ^{[1
]}

Turok, N

机构：

[1] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA

[2] Ctr Math Sci, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England

来源：

SCIENCE | 2002年 / 296卷 / 5572期

关键词：

D O I：

10.1126/science.1070462

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We propose a cosmological model in which the universe undergoes an endless sequence of cosmic epochs that begin with a "bang" and end in a "crunch." Temperature and density at the transition remain finite. Instead of having an inflationary epoch, each cycle includes a period of slow accelerated expansion (as recently observed) followed by contraction that produces the homogeneity, flatness, and energy needed to begin the next cycle.

引用

页码：1436 / 1439

页数：4

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