On dumb holes and their gravity duals
On dumb holes and their gravity duals
复制标题
DOI：
10.1007/jhep04(2011)030
复制
发表时间：
2010-11
影响因子：
5.4
通讯作者：
Sumit R. Das;A. Ghosh;Jae-Hyuk Oh;A. Shapere
中科院分区：
文献类型：
--
作者：
Sumit R. Das;A. Ghosh;Jae-Hyuk Oh;A. Shapere
众所周知，变成超音速的非均匀流体流动会产生能区和层位的声学模拟。这导致了声子的类霍金辐射，其温度基本上由视界处的速度梯度给出。我们发现这样的声学哑孔充电保形流体和使用流体重力对应构造双重重力解决方案。围绕这些引力背景的一类准正规模感知到一个视界。在量子化时，这意味着这些模式的热谱。
Inhomogeneous fluid flows which become supersonic are known to produce acoustic analogs of ergoregions and horizons. This leads to Hawking-like radiation of phonons with a temperature essentially given by the gradient of the velocity at the horizon. We find such acoustic dumb holes in charged conformal fluids and use the fluid-gravity correspondence to construct dual gravity solutions. A class of quasinormal modes around these gravitational backgrounds perceive a horizon. Upon quantization, this implies a thermal spectrum for these modes.