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arXiv 1502.02820hep-thgr-qc
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(反)de Sitter黑洞在1/D展开下的拟正规模

Quasinormal modes of (Anti-)de Sitter black holes in the 1/D expansion

Roberto Emparan, Ryotaku Suzuki, Kentaro Tanabe

摘要:

本文利用逆维展开法解析计算了Einstein-(Anti-)de Sitter引力静态黑洞的一组准正规模的频率,包括球形、平面和双曲视界的情形.我们研究的模式是在近视界区域,这是那些捕获物理特有的每个黑洞(如他们的不稳定性),并在大型黑洞包含流体动力学行为本地化的去耦模式。我们的结果也给出了不稳定的Gregory-Laflamme频率的Ricci平坦的黑膜,以两个订单高1/D比以前的计算。我们讨论了由于1/D展开式的渐近性而非收敛性导致的这些结果的精度限制,这是由于在有限D处违反了解耦条件。最后,我们比较了AdS黑膜的频率在动量k的幂的流体动力学膨胀的计算。我们的结果对于声模可扩展到k^9,对于剪切模可扩展到k^8。

英文摘要:

We use the inverse-dimensional expansion to compute analytically the frequencies of a set of quasinormal modes of static black holes of Einstein-(Anti-)de Sitter gravity, including the cases of spherical, planar or hyperbolic horizons. The modes we study are decoupled modes localized in the near-horizon region, which are the ones that capture physics peculiar to each black hole (such as their instabilities), and which in large black holes contain hydrodynamic behavior. Our results also give the unstable Gregory-Laflamme frequencies of Ricci-flat black branes to two orders higher in 1/D than previous calculations. We discuss the limits on the accuracy of these results due to the asymptotic but not convergent character of the 1/D expansion, which is due to the violation of the decoupling condition at finite D. Finally, we compare the frequencies for AdS black branes to calculations in the hydrodynamic expansion in powers of the momentum k. Our results extend up to k^9 for the sound mode and to k^8 for the shear mode.

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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