Resonant frequencies of the hydrodynamic vortex

Resonant frequencies of the hydrodynamic vortex
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DOI:
10.1142/s0218271817500353
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发表时间:
2015-10
期刊:
arXiv: General Relativity and Quantum Cosmology
影响因子:
--
通讯作者:
H. S. Vieira
H. S. Vieira
中科院分区:
其他
文献类型:
--
作者:
H. S. Vieira

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我们研究了流体动力涡旋几何的声微扰,并给出了该几何的共振频率(准谱)的精确表达式。得到了协变Klein-Gordon方程的径向部分在该时空中的精确解,并以二重合流Heun函数的形式给出。我们发现,共振频率是复数。
We study the sound perturbation of the hydrodynamic vortex geometry and present an exact expression for the resonant frequencies (quasispectrum) of this geometry. Exact solution for the radial part of the covariant Klein-Gordon equation in this spacetime is obtained, and is given in terms of the double confluent Heun functions. We found that the resonant frequencies are complex number.