Quantum Critical States and Phase Transitions in the Presence of Non-Equilibrium Noise

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Quantum Critical States and Phase Transitions in the Presence of Non-Equilibrium Noise

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dc.contributor.author Torre, Emanuele
dc.contributor.author Giamarchi, Thierry
dc.contributor.author Altman, Ehud
dc.contributor.author Demler, Eugene A.
dc.date.accessioned 2012-01-23T19:15:03Z
dc.date.issued 2010
dc.identifier.citation Torre, Emanuele, Eugene Demler, Thierry Giamarchi, and Ehud Altman. 2010. Quantum critical states and phase transitions in the presence of non-equilibrium noise. Nature Physics 6(10): 806-810. en_US
dc.identifier.issn 1745-2481 en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:8005349
dc.description.abstract Quantum critical points are characterized by scale invariant correlations and correspondingly long-ranged entanglement. As such, they present fascinating examples of quantum states of matter, the study of which has been an important theme in modern physics. Nevertheless very little is known about the fate of quantum criticality under non-equilibrium conditions. In this paper we investigate the effect of external noise sources on quantum critical points. It is natural to expect that noise will have a similar effect to finite temperature, destroying the subtle correlations underlying the quantum critical behavior. Surprisingly we find that in many interesting situations the ubiquitous \(1/f\) noise preserves the critical correlations. The emergent states show intriguing interplay of intrinsic quantum critical and external noise driven fluctuations. We demonstrate this general phenomenon with specific examples in solid state and ultracold atomic systems. Moreover our approach shows that genuine quantum phase transitions can exist even under non equilibrium conditions. en_US
dc.description.sponsorship Physics en_US
dc.language.iso en_US en_US
dc.publisher Nature Publishing Group en_US
dc.relation.isversionof doi:10.1038/nphys1754 en_US
dc.relation.hasversion http://arxiv.org/abs/0908.0868 en_US
dash.license OAP
dc.subject quantum physics en_US
dc.subject statistical physics en_US
dc.subject thermodynamics en_US
dc.subject nonlinear dynamics en_US
dc.title Quantum Critical States and Phase Transitions in the Presence of Non-Equilibrium Noise en_US
dc.type Journal Article en_US
dc.description.version Author's Original en_US
dc.relation.journal Nature Physics en_US
dash.depositing.author Demler, Eugene A.
dc.date.available 2012-01-23T19:15:03Z

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  • FAS Scholarly Articles [6948]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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