Universität zu Köln

Bezvershenko, Alla, V, Halati, Catalin-Mihai ORCID: 0000-0002-8344-5595, Sheikhan, Ameneh, Kollath, Corinna and Rosch, Achim (2021). Dicke Transition in Open Many-Body Systems Determined by Fluctuation Effects. Phys. Rev. Lett., 127 (17). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We develop an approach to describe the Dicke transition of interacting many-particle systems strongly coupled to the light of a lossy cavity. A mean-field approach is combined with a perturbative treatment of fluctuations beyond mean field, which becomes exact in the thermodynamic limit. These fluctuations completely change the nature of the steady state, determine the thermal character of the transition, and lead to universal properties of the emerging self-organized states. We validate our results by comparing them with time-dependent matrix-product-state calculations.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bezvershenko, Alla, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Halati, Catalin-Mihai UNSPECIFIED orcid.org/0000-0002-8344-5595 UNSPECIFIED Sheikhan, Ameneh UNSPECIFIED UNSPECIFIED UNSPECIFIED Kollath, Corinna UNSPECIFIED UNSPECIFIED UNSPECIFIED Rosch, Achim UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-572494
DOI:	10.1103/PhysRevLett.127.173606
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	127
Number:	17
Date:	2021
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PHASE-TRANSITION; ATOMS Multiple languages Physics, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57249