Dynamical phase transitions and instabilities in open atomic many-body systems

Diehl, Sebastian and Tomadin, Andrea and Micheli, Andrea and Fazio, Rosario and Zoller, Peter (2010) Dynamical phase transitions and instabilities in open atomic many-body systems. Physical review letters, 105 (1). ISSN 0031-9007

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Abstract

We discuss an open driven-dissipative many-body system, in which the competition of unitary Hamiltonian and dissipative Liouvillian dynamics leads to a nonequilibrium phase transition. It shares features of a quantum phase transition in that it is interaction driven, and of a classical phase transition, in that the ordered phase is continuously connected to a thermal state. We characterize the phase diagram and the critical behavior at the phase transition approached as a function of time. We find a novel fluctuation induced dynamical instability, which occurs at long wavelength as a consequence of a subtle dissipative renormalization effect on the speed of sound.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
129032
Deposited By:
Deposited On:
22 Nov 2018 16:40
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Sep 2020 04:48