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Indexed by:期刊论文

Date of Publication:2003-07-01

Journal:CHINESE PHYSICS LETTERS

Included Journals:Scopus、SCIE、CSCD

Volume:20

Issue:7

Page Number:995-998

ISSN No.:0256-307X

Abstract: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.