Dynamical Casimir effect in ultra-cold matter with a time-dependent effective charge
V. V. Dodonov, José Tito Mendonça
We propose a new scheme for observing the phonon analogue of the dynamical Casimir effect (DCE) in a gas of laser-cooled atoms. Namely, the emission of phonon pairs from vacuum can happen due to periodic variations of the effective charge of atoms, caused by a small intensity modulation of laser beams used for cooling and trapping the atoms. Then the 'temporal Bragg diffraction' results in phonon backscattering in time, equivalent to the DCE.
Physica Scripta•Apr 1, 2014•14 citations