Many-body localization of bosons in optical lattices

2018
journal article
article
63
cris.lastimport.wos2024-04-10T02:49:30Z
dc.abstract.enMany-body localization for a system of bosons trapped in a one-dimensional lattice is discussed. Two models that may be realized for cold atoms in optical lattices are considered. The model with a random on-site potential is compared with previously introduced random interactions model. While the origin and character of the disorder in both systems is different they show interesting similar properties. In particular, many-body localization appears for a sufficiently large disorder as verified by a time evolution of initial density wave states as well as using statistical properties of energy levels for small system sizes. Starting with different initial states, we observe that the localization properties are energy-dependent which reveals an inverted many-body localization edge in both systems (that finding is also verified by statistical analysis of energy spectrum). Moreover, we consider computationally challenging regime of transition between many body localized and extended phases where we observe a characteristic algebraic decay of density correlations which may be attributed to subdiffusion (and Griffiths-like regions) in the studied systems. Ergodicity breaking in the disordered Bose–Hubbard models is compared with the slowing-down of the time evolution of the clean system at large interactions.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiegopl
dc.contributor.authorSierant, Piotr - 187960 pl
dc.contributor.authorZakrzewski, Jakub - 100023 pl
dc.date.accessioned2018-05-08T07:55:39Z
dc.date.available2018-05-08T07:55:39Z
dc.date.issued2018pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number4pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume20pl
dc.identifier.articleid043032pl
dc.identifier.doi10.1088/1367-2630/aabb17pl
dc.identifier.eissn1367-2630pl
dc.identifier.projectROD UJ / Ppl
dc.identifier.urihttps://ruj.uj.edu.pl/xmlui/handle/item/54142
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa 3.0*
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/legalcode*
dc.share.typeotwarte czasopismo
dc.subtypeArticlepl
dc.titleMany-body localization of bosons in optical latticespl
dc.title.journalNew Journal of Physicspl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T02:49:30Z
dc.abstract.enpl
Many-body localization for a system of bosons trapped in a one-dimensional lattice is discussed. Two models that may be realized for cold atoms in optical lattices are considered. The model with a random on-site potential is compared with previously introduced random interactions model. While the origin and character of the disorder in both systems is different they show interesting similar properties. In particular, many-body localization appears for a sufficiently large disorder as verified by a time evolution of initial density wave states as well as using statistical properties of energy levels for small system sizes. Starting with different initial states, we observe that the localization properties are energy-dependent which reveals an inverted many-body localization edge in both systems (that finding is also verified by statistical analysis of energy spectrum). Moreover, we consider computationally challenging regime of transition between many body localized and extended phases where we observe a characteristic algebraic decay of density correlations which may be attributed to subdiffusion (and Griffiths-like regions) in the studied systems. Ergodicity breaking in the disordered Bose–Hubbard models is compared with the slowing-down of the time evolution of the clean system at large interactions.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorpl
Sierant, Piotr - 187960
dc.contributor.authorpl
Zakrzewski, Jakub - 100023
dc.date.accessioned
2018-05-08T07:55:39Z
dc.date.available
2018-05-08T07:55:39Z
dc.date.issuedpl
2018
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.numberpl
4
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
20
dc.identifier.articleidpl
043032
dc.identifier.doipl
10.1088/1367-2630/aabb17
dc.identifier.eissnpl
1367-2630
dc.identifier.projectpl
ROD UJ / P
dc.identifier.uri
https://ruj.uj.edu.pl/xmlui/handle/item/54142
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa 3.0
dc.rights.licence
CC-BY
dc.rights.uri*
http://creativecommons.org/licenses/by/3.0/legalcode
dc.share.type
otwarte czasopismo
dc.subtypepl
Article
dc.titlepl
Many-body localization of bosons in optical lattices
dc.title.journalpl
New Journal of Physics
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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