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论文类型：期刊论文

发表时间：2003-07-01

发表刊物：CHINESE PHYSICS LETTERS

收录刊物：Scopus、SCIE、CSCD

卷号：20

期号：7

页面范围：995-998

ISSN号：0256-307X

摘要：The big bounce singularity of a simple live-dimensional cosmological model is studied. Contrary to the standard big bang space-time singularity, this big bounce singularity is found to be an event horizon at which the scale factor and the mass density of the universe are finite, while the pressure undergoes a sudden transition from negative infinity to positive infinity. By using coordinate transformation it is also shown that before the bounce the universe contracts deflationary. According to the proper-time, the universe may have existed for an infinitely long time.