Hawking Radiation on an Ion Ring in the Quantum Regime

Understand

This paper discusses a recent proposal for the simulation of acoustic black holes with ions.

• The ions are rotating on a ring with an inhomogeneous, but stationary velocity profile.
• Phonons cannot leave a region, in which the ion velocity exceeds the group velocity of the phonons, as light cannot escape from a black hole.
• The system is described by a discrete field theory with a nonlinear dispersion relation.