旋转声黑洞的超共振效应与Lorentz对称性破缺
Superresonance effect from a rotating acoustic black hole and Lorentz symmetry breaking
摘要：
我们研究了声超共振现象（类似于黑洞物理学中的超辐射现象）的可能性，由于洛伦兹对称性破缺而旋转的声黑洞的能区反射的声波的放大。对于旋转的黑洞，超辐射效应对应于入射波的反射系数大于1的情况，并且能量从它们中提取。对于类Kerr声黑洞，其质量损失率受Lorentz对称破缺的影响。我们还表明，对于适当的洛伦兹破坏参数的值，更宽的频谱的粒子波函数可以散射的声学黑洞的振幅增加。
英文摘要：
We investigate the possibility of the acoustic superresonance phenomenon (analog to the superradiance in black hole physics), i.e., the amplification of a sound wave by reflection from the ergoregion of a rotating acoustic black hole with Lorentz symmetry breaking. For rotating black holes the effect of superradiance corresponds to the situation where the incident waves has reflection coefficient greater than one, and energy is extracted from them. For an acoustic Kerr-like black hole its rate of loss of mass is affected by the Lorentz symmetry breaking. We also have shown that for suitable values of the Lorentz violating parameter a wider spectrum of particle wave function can be scattered with increased amplitude by the acoustic black hole.
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