DID THE UNIVERSE HAVE A BEGINNING

被引:42
作者
VILENKIN, A
机构
[1] California Institute of Technology, Pasadena
来源
PHYSICAL REVIEW D | 1992年 / 46卷 / 06期
关键词
D O I
10.1103/PhysRevD.46.2355
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
It is argued that "eternal inflation" must have a beginning in time. Conditions are formulated for a spacetime to describe an eternally inflating universe without a beginning, and it is shown that these conditions cannot be satisfied. A rigorous proof is given for a two-dimensional spacetime, and a plausibility argument for four dimensions.
引用
收藏
页码:2355 / 2361
页数:7
相关论文
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