Depolarization shift of the superradiant phase transition

Griesser, T. and Vukics, András and Domokos, Péter (2016) Depolarization shift of the superradiant phase transition. PHYSICAL REVIEW A, 94 (3). ISSN 2469-9926

Preview

Text 1604.03531.pdf Download (562kB) | Preview

Abstract

We investigate the possibility of a Dicke-type superradiant phase transition of an atomic gas with anextended model which takes into account the short-range depolarizing interactions between atomsapproaching each other as close as the atomic size scale, which interaction appears in a regularizedelectric-dipole picture of the QED of atoms. By using a mean field model, we find that a criticaldensity does indeed exist, though the atom-atom contact interaction shifts it to a higher value thanit can be obtained from the bare Dicke-model. We argue that the system, at the critical density,transitions to the condensed rather than the “superradiant” phase.

Actions (login required)

Edit Item