Dynamical Casimir effect for magnons in a spinor Bose-Einstein condensate
Other Condensed Matter
2009-12-02 v1 Quantum Physics
Abstract
Magnon excitation in a spinor Bose-Einstein condensate by a driven magnetic field is shown to have a close analogy with the dynamical Casimir effect. A time-dependent external magnetic field amplifies quantum fluctuations in the magnetic ground state of the condensate, leading to magnetization of the system. The magnetization occurs in a direction perpendicular to the magnetic field breaking the rotation symmetry. This phenomenon is numerically demonstrated and the excited quantum field is shown to be squeezed.
Cite
@article{arxiv.0805.2210,
title = {Dynamical Casimir effect for magnons in a spinor Bose-Einstein condensate},
author = {Hiroki Saito and Hiroyuki Hyuga},
journal= {arXiv preprint arXiv:0805.2210},
year = {2009}
}
Comments
8 pages, 3 figures