Depolarization shift of the superradiant phase transition

Tobias Grießer, A. Vukics, P. Domokos

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Abstract

We investigate the possibility of a Dicke-type superradiant phase transition of an atomic gas with an extended model which takes into account the short-range depolarizing interaction between atoms that approach each other as close as the atomic size scale, which interaction appears in a regularized electric-dipole picture of the QED of atoms. By using a mean-field model, we find that a critical density does indeed exist, though the atom-atom contact interaction shifts it to a higher value than that from the bare Dicke model.

Original languageEnglish
Article number033815
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume94
Issue number3
DOIs
Publication statusPublished - Sep 9 2016

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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