| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1537187 | Optics Communications | 2010 | 5 Pages |
Abstract
The instability in the Dicke model with a rotating-wave approximation for finite N atoms is investigated in terms of the Berry phase and the fidelity. It can be identify by the discontinuity of these quantities as a function of the atom-field coupling parameter. Involving an additional field interaction, it is observed that the instability is not eliminated even for strong interaction of the bosonic fields, contrarily to the previous results limited to the minimal coupling regions.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yu-Yu Zhang, Tao Liu, Qing-Hu Chen, Ke-lin Wang,