Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany.
Phys Rev Lett. 2010 Jun 25;104(25):250403. doi: 10.1103/PhysRevLett.104.250403. Epub 2010 Jun 24.
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.
在这封信件中，我们提议用环形中的离子来模拟声黑洞。如果离子以固定的非均匀速度分布旋转，就会出现离子速度超过声子群速度的区域。在这些区域中，声子会像光在黑洞中一样被捕获，尽管我们有离散的场论和非线性色散关系。我们研究了在这种设置下霍金辐射的出现，并提出了一种检测它的方案。
