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arXiv 0706.2489hep-thastro-phgr-qc
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实验室中Schwarzschild黑洞的扰动

Perturbations of Schwarzschild black holes in laboratories

E. Abdalla, R. A. Konoplya, A. Zhidenko

摘要:

众所周知,Schwarzschild黑洞的扰动是由一个具有某种有效势的波动方程所控制的。我们考虑气体在一个叫做拉瓦尔喷管的管子中的扰动,这个喷管中间很窄,在喉部有一个音速点。通过将任意形式的Laval喷管中的波动方程与Schwarzschild黑洞自旋-s扰动的波动方程等价,得到了Laval喷管形式的精确表达式,其中气流的声扰动对应于Schwarzschild黑洞扰动的一般形式。这就允许在实验室中观察声波,它是史瓦西黑洞阻尼准常态振荡的模拟。所发现的精确声学模拟也允许观察由波动方程支配的一些其他现象,例如波散射和隧道效应。

英文摘要:

It is well-known that the perturbations of Schwarzschild black holes are governed by a wave equation with some effective potential. We consider perturbations of a gas in a tube called Laval nozzle, which is narrow in the middle and has a sonic point in the throat. By equating the wave equation in a Laval nozzle of an arbitrary form with the wave equation of spin-s perturbations of Schwarzschild black holes, we find the exact expression for the form of the Laval nozzle, for which acoustic perturbations of the gas flow corresponds to the general form of perturbations of Schwarzschild black holes. This allows observation, in a laboratory, of the acoustic waves, which are analogue of damping quasinormal oscillations of Schwarzschild black holes. The found exact acoustic analog allows to observe also some other phenomena governed by the wave equation, such as the wave scattering and tunneling.

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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