Hawking Radiation from an Acoustic Black Hole on an Ion Ring
Hawking Radiation from an Acoustic Black Hole on an Ion Ring
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DOI：
10.1103/physrevlett.104.250403
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发表时间：
2010-06-24
影响因子：
8.6
通讯作者：
Cirac, J. I.
中科院分区：
文献类型：
--
作者：
Horstmann, B.;Reznik, B.;Cirac, J. I.
在这封信中，我们建议用环中的离子来模拟声学黑洞。如果离子以静止且不均匀的速度分布旋转，则可能出现离子速度超过声子群速度的区域。在这些区域中，声子像光一样被困在黑洞中，尽管我们有离散场论和非线性色散关系。我们研究了这种装置中霍金辐射的出现，并提出了一种检测它的方案。
In this Letter we propose to simulate acoustic black holes with ions in rings. If the ions are rotating with a stationary and inhomogeneous velocity profile, regions can appear where the ion velocity exceeds the group velocity of the phonons. In these regions phonons are trapped like light in black holes, even though we have a discrete field theory and a nonlinear dispersion relation. We study the appearance of Hawking radiation in this setup and propose a scheme to detect it.