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arXiv 2301.01329gr-qc
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参数共振引起的恒星不稳定

Stellar Instability from Parametric Resonance

Rodrigo Maier

摘要:

在本文中,我们研究恒星配置的稳定性,其中的内部解决方案是由一个封闭的FLRW几何来源于一个充电的无压流体和辐射。相互作用的真空分量和共形耦合的质量标量场也被包括在内。给出无压流体与真空分量之间能量传递的一个简单因子,我们得到有界内部振动解。我们表明,在适当的域的参数空间的内部动态是非常不稳定的,使KAM环面的断裂导致破坏性的喷射质量。对于这样的配置,内部解渐近匹配外部Reissner-Nordström-de Sitter时空。

英文摘要:

In this paper we examine the stability of stellar configurations in which the interior solution is described by a closed FLRW geometry sourced with a charged pressureless fluid and radiation. An interacting vacuum component and a conformally coupled massive scalar field are also included. Given a simple factor for the energy transfer between the pressureless fluid and the vacuum component we obtain bounded interior oscillatory solutions. We show that in proper domains of the parameter space the interior dynamics is highly unstable so that the break of the KAM tori leads to a disruptive ejection of mass. For such configurations the interior solution asymptotically matches an exterior Reissner-Nordström-de Sitter spacetime.

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