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arXiv 0709.4541gr-qc
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高维准球引力坍缩与物态方程的影响

Quasi-Spherical Gravitational Collapse in higher dimension and the effect of equation of state

Sanjukta Chakraborty, Subenoy Chakraborty, Ujjal Debnath

摘要:

研究了n+2维准球时空中径向压力不为零的流体的引力坍缩。本文给出了状态方程$p_{r}=(γ-1)ρ.$的一个精确解析解(忽略任意积分函数)。通过比较视视界和中心壳聚焦奇点的形成时间,研究了局部奇点,并通过径向零测地线的存在性表征了坍缩最终命运的全局性质。结果表明,D维状态方程$p=-ρ$、($-$ 1)维尘埃和($-$ 2)维状态方程$p=ρ$的坍缩终态是相同的.

英文摘要:

Gravitational collapse in (n+2) dimensional quasi-spherical space-time is studied for a fluid with non vanishing radial pressure. An exact analytic solution is obtained (ignoring the arbitrary integration function) for the equation of state $p_{r}=(γ-1)ρ.$ The singularity is studied locally by comparing the time of formation of apparent horizon and the central shell focusing singularity while the global nature of the final fate of collapse is characterized by the existence of radial null geodesic. It is revealed that the end state of collapse for D dimension with equation of state $p=-ρ$, for (D$-$1) dimensional dust and (D$-$2)dimension with equation of state $p=ρ$ are identical.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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