| Big Bounce Singularity of a Simple Five—Dimensional Cosmological Model |
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| 引用本文： | 徐立昕,刘宏亚,王贝利.Big Bounce Singularity of a Simple Five—Dimensional Cosmological Model[J].中国物理快报,2003,20(7):995-998. |
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| 作者姓名： | 徐立昕 刘宏亚 王贝利 |
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| 作者单位： | DepartmentofPhysics,DalianUniversityofTechnology,Dalian116024 |
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| 摘 要： | The big bounce singularity of a simple five-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.
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| 关 键 词： | 五维宇宙论模型 时空关系 暴涨宇宙论 大爆炸 |
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