Universität zu Köln

Mathey, Steven ORCID: 0000-0002-2813-9501 and Diehl, Sebastian (2019). Absence of Criticality in the Phase Transitions of Open Floquet Systems. Phys. Rev. Lett., 122 (11). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

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Abstract

We address the nature of phase transitions in periodically driven systems coupled to a bath. The latter enables a synchronized nonequilibrium Floquet steady state at finite entropy, which we analyze for rapid drives within a nonequilibrium renormalization group (RG) approach. While the infinitely rapidly driven limit exhibits a second-order phase transition, here we reveal that fluctuations turn the transition first order when the driving frequency is finite. This can be traced back to a universal mechanism, which crucially hinges on the competition of degenerate, near critical modes associated with higher Floquet Brillouin zones. The critical exponents of the infinitely rapidly driven system-including a new, independent one-can yet be probed experimentally upon smoothly tuning towards that limit.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Mathey, Steven UNSPECIFIED orcid.org/0000-0002-2813-9501 UNSPECIFIED Diehl, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-153445
DOI:	10.1103/PhysRevLett.122.110602
Journal or Publication Title:	Phys. Rev. Lett.
Volume:	122
Number:	11
Date:	2019
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	1079-7114
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Theoretical Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PERIODICALLY DRIVEN; TRANSPORT Multiple languages Physics, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15344