声学黑洞简介

介绍了一种引力黑洞的类比模型———声黑洞.从几何声学和物理声学两方面对其类比原理进行了分析,介绍了声黑洞的定义及其结构参数.回顾了在声黑洞的研究历程中所取得的重要进展,分析指出声黑洞的研究目前存在的理论和实验上的困难,并对未来的研究进行了展望.     

Emission of Phonons from a Rotating Sonic Black Hole

We investigate the Hawking radiation from a rotating acoustic black hole. The phonon emission is calculated by using two methods and the same results are obtained. The contribution of the time coordinate to the phonon radiation is also discussed, which cannot be ignored for the coordinate systems that are not well-behaved at the horizon.