Revealing the nature of nonequilibrium phase transitions with quantum trajectories
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
A damped and driven collective spin system is analyzed by using quantum state diffusion. This approach
allows for a mostly analytical treatment of the investigated nonequilibrium quantum many-body dynamics, which
features a phase transition in the thermodynamical limit. The exact results obtained in this work, which are free of
any finite-size defects, provide a complete understanding of the model. Moreover, the trajectory framework gives
an intuitive picture of the two phases occurring, revealing a spontaneously broken symmetry and allowing for
a qualitative and quantitative characterization of the phases. We determine exact critical exponents, investigate
finite-size scaling, and explain a remarkable nonalgebraic behavior at the transition in terms of torus hopping.
allows for a mostly analytical treatment of the investigated nonequilibrium quantum many-body dynamics, which
features a phase transition in the thermodynamical limit. The exact results obtained in this work, which are free of
any finite-size defects, provide a complete understanding of the model. Moreover, the trajectory framework gives
an intuitive picture of the two phases occurring, revealing a spontaneously broken symmetry and allowing for
a qualitative and quantitative characterization of the phases. We determine exact critical exponents, investigate
finite-size scaling, and explain a remarkable nonalgebraic behavior at the transition in terms of torus hopping.
Details
Originalsprache | Englisch |
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Seitenumfang | 7 |
Fachzeitschrift | Physical Review A |
Ausgabenummer | 062120 |
Publikationsstatus | Veröffentlicht - 2019 |
Peer-Review-Status | Ja |
Externe IDs
Scopus | 85068132965 |
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ORCID | /0000-0002-7806-3525/work/142234166 |
ORCID | /0000-0002-1520-7931/work/142246620 |
Schlagworte
Schlagwörter
- COOPERATIVE FLUORESCENCE, STATE DIFFUSION, SUPERFLUID, GAS