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arXiv 2303.02592gr-qc
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柱对称时空中的稳定带电引力玻色-爱因斯坦凝聚星(gravastar)模型

Stable Charged Gravastar model in Cylindrically Symmetric Space-time

D. Bhattacharjee, P. K. Chattopadhyay

AI总结:

该研究在柱对称时空下构建带电引力真空星模型,用薄壳近似替代事件视界以消除中心奇点,算出薄壳相关参数,证实其熵低于黑洞、系统稳定且无信息佯谬,拓展了引力真空星的研究范畴。

摘要:

本文将引力玻色-爱因斯坦凝聚星(gravastar,引力真空星)的研究思路拓展至带电引力真空星系统,探究电荷在引力真空星形成及其性质中的作用。我们采用了柱对称时空中最普遍的线元。该方法消除了引力真空星中心的奇点,并用薄壳近似替代了事件视界。我们计算了薄壳的固有长度与能量,还推算了薄壳的质量上限。熵的计算结果表明,该构型的熵小于准黑洞系统的熵,甚至小于经典黑洞的熵。与黑洞不同,引力真空星系统是一种稳定构型,不存在信息佯谬。

英文摘要:

In this paper, we have extended the idea of gravitational Bose-Einstein condensate star (gravastar) to charged gravastar system and explored the role of charge in gravastar formation and its properties. We have used the most general line element in cylindrically symmetric space-time. In this approach the existence of singularity at the center of gravastar is removed and the event horizon is replaced by the thin shell approximation. The proper length of the shell is calculated along with the energy of the thin shell. A mass limit for thin shell has also been evaluated. The entropy calculation shows that the entropy of the configuration is smaller than that of a quasi-black hole system and even smaller than that of a classical black hole. Unlike black hole, the gravastar system is a stable configuration and there is no information paradox.

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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