Universität zu Köln

Marino, Jamir and Diehl, Sebastian (2016). Quantum dynamical field theory for nonequilibrium phase transitions in driven open systems. Phys. Rev. B, 94 (8). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

We develop a quantum dynamical field theory for studying phase transitions in driven open systems coupled to Markovian noise, where nonlinear noise effects and fluctuations beyond semiclassical approximations influence the critical behavior. We systematically compare the diagrammatics, the properties of the renormalization group flow, and the structure of the fixed points of the quantum dynamical field theory and of its semiclassical counterpart, which is employed to characterize dynamical criticality in three-dimensional driven-dissipative condensates. As an application, we perform the Keldysh functional renormalization of a one-dimensional driven open Bose gas, where a tailored diffusion Markov noise realizes an analog of quantum criticality for driven-dissipative condensation. We find that the associated nonequilibrium quantum phase transition does not map into the critical behavior of its three-dimensional classical driven counterpart.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Marino, Jamir UNSPECIFIED UNSPECIFIED UNSPECIFIED Diehl, Sebastian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-266162
DOI:	10.1103/PhysRevB.94.085150
Journal or Publication Title:	Phys. Rev. B
Volume:	94
Number:	8
Date:	2016
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
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 BOSE-EINSTEIN CONDENSATION; FUNCTIONAL RENORMALIZATION-GROUP; PATH-INTEGRAL APPROACH; COLD ATOMS; CAVITY; GROWTH; STATES; COHERENCE Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/26616