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2017 | 132 | 6 | 1707-1712
Article title

Many-Body Localization for Randomly Interacting Bosons

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Abstracts
EN
We study many-body localization in a one dimensional optical lattice filled with bosons. The interaction between bosons is assumed to be random, which can be realized for atoms close to a microchip exposed to a spatially fluctuating magnetic field. Close to a Feshbach resonance, such controlled fluctuations can be transfered to the interaction strength. We show that the system reveals an inverted mobility edge, with mobile particles at the lower edge of the spectrum. A statistical analysis of level spacings allows us to characterize the transition between localized and excited states. The existence of the mobility edge is confirmed in large systems, by time dependent numerical simulations using tDMRG. A simple analytical model predicts the long time behavior of the system.
Publisher

Year
Volume
132
Issue
6
Pages
1707-1712
Physical description
Dates
published
2017-12
Contributors
author
  • Instytut Fizyki imienia Mariana Smoluchowskiego, Uniwersytet Jagielloński, Profesora Stanisława Łojasiewicza 11, PL-30348 Kraków, Poland
author
  • Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 Place Jussieu, 75005 Paris, France
author
  • Instytut Fizyki imienia Mariana Smoluchowskiego, Uniwersytet Jagielloński, Profesora Stanisława Łojasiewicza 11, PL-30348 Kraków, Poland
  • Mark Kac Complex Systems Research Center, Uniwersytet Jagielloński, Kraków, Poland
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv132n6p11kz
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