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arXiv 1405.7893gr-qchep-th
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多毛黑洞:奇宇称扰动下的稳定性和慢旋转解的存在性

Hairy black holes: stability under odd-parity perturbations and existence of slowly rotating solutions

Andres Anabalon, Jiří Bičák, Joel Saavedra

摘要:

我们表明,独立的标量场的潜力和特定的渐近性质的时空(渐近平坦,德西特或反德西特),任何静态的,球对称或平面,黑洞或孤子的爱因斯坦理论的解决方案最低限度地耦合到一个真正的标量场与一般的潜力是模式稳定的线性奇宇称扰动。为此,我们推广了一般自相互作用标量场的Regge-Wheeler方程,并证明了相关薛定谔算子的势可以通过所谓的S-变形映射到半正定势。利用这些结果,我们研究了慢旋转组态的存在性。将标架拖曳效应与Kerr黑洞作了比较。

英文摘要:

We show that, independently of the scalar field potential and of specific asymptotic properties of the spacetime (asymptotically flat, de Sitter or anti-de Sitter), any static, spherically symmetric or planar, black hole or soliton solution of the Einstein theory minimally coupled to a real scalar field with a general potential is mode stable under linear odd-parity perturbations. To this end, we generalize the Regge-Wheeler equation for a generic self-interacting scalar field, and show that the potential of the relevant Schrödinger operator can be mapped, by the so-called S-deformation, to a semi-positively defined potential. With these results at hand we study the existence of slowly rotating configurations. The frame dragging effect is compared with the Kerr black hole.

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