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arXiv 2007.12029gr-qc
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复杂因子为零的自引力系统的准同调演化

Quasi-homologous evolution of self-gravitating systems with vanishing complexity factor

L. Herrera, A. Di Prisco, J. Ospino

摘要:

本文研究了满足最小复杂性条件,且面积半径速度正比于面积半径(准同调条件)的自引力耗散或非耗散系统的演化。在上述条件下,找到了几个精确的分析模型。所提出的一些模型描述了球对称耗散流体分布的演变,其中心被一个空腔包围。其中一些满足Darmois条件,而另一些则呈现壳,并且必须在一个或两个边界表面上满足Israel条件。展望应用这些模型的天体物理方案进行了讨论。

英文摘要:

We investigate the evolution of self-gravitating either dissipative or non--dissipative systems satisfying the condition of minimal complexity, and whose areal radius velocity is proportional to the areal radius (quasi-homologous condition). Several exact analytical models are found under the above mentioned conditions. Some of the presented models describe the evolution of spherically symmetric dissipative fluid distributions whose center is surrounded by a cavity. Some of them satisfy the Darmois conditions whereas others present shells and must satisfy the Israel condition on either one or both boundary surfaces. Prospective applications of some of these models to astrophysical scenarios are discussed.

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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