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arXiv 2307.04060gr-qchep-th
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爱因斯坦-外尔-标量理论中史瓦西黑洞的双重不稳定性

Double instability of Schwarzschild black holes in Einstein-Weyl-scalar theory

Yun Soo Myung

AI总结:

本文研究爱因斯坦-外尔-标量理论中史瓦西黑洞的稳定性,发现其存在由Gregory-Laflamme不稳定性和快子不稳定性构成的双重不稳定性,并分别导致单支与无限支标量化黑洞。

摘要:

我们研究了爱因斯坦-外尔-标量(EWS)理论中史瓦西黑洞的稳定性,该理论包含与Weyl项的二次标量耦合。其线性化理论允许里奇张量的Lichnerowicz方程以及标量方程。线性化的里奇张量带有一个规则质量项($m^2_2$),而线性化的标量具有一个快子质量项($-1/m^2_2$)。结果表明,EWS理论中史瓦西黑洞的双重不稳定性由Gregory-Laflamme不稳定性和快子不稳定性给出。在小质量区间$m_2<0.876$时,史瓦西黑洞对里奇张量扰动变得不稳定,而快子不稳定性在$m_2<1.174$时实现。前者将提供单支标量化黑洞,而后者将诱导出无限支标量化黑洞。

英文摘要:

We study the stability of Schwarzschild black hole in Einstein-Weyl-scalar (EWS) theory with a quadratic scalar coupling to the Weyl term. Its linearized theory admits the Lichnerowicz equation for Ricci tensor as well as scalar equation. The linearized Ricci-tensor carries with a regular mass term ($m^2_2$), whereas the linearized scalar has a tachyonic mass term ($-1/m^2_2$). It turns out that the double instability of Schwarzschild black hole in EWS theory is given by Gregory-Laflamme and tachyonic instabilities. In the small mass regime of $m_2<0.876$, the Schwarzschild black hole becomes unstable against Ricci-tensor perturbations, while tachyonic instability is achieved for $m_2<1.174$. The former would provide a single branch of scalarized black holes, whereas the latter would induce infinite branches of scalarized black holes.

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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