Contour-time approach to the disordered Bose-Hubbard model in the strong coupling regime

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dc.contributor.authorMokhtari-Jazi, Ali
dc.contributor.authorFitzpatrick, Matthew R. C.
dc.contributor.authorKennett, Malcolm P.
dc.date.accessioned2024-02-07T16:18:26Z
dc.date.available2024-02-07T16:18:26Z
dc.date.copyright2023en_US
dc.date.issued2023
dc.description.abstractThere has been considerable interest in the disordered Bose Hubbard model (BHM) in recent years, particularly in the context of thermalization and many-body localization. We develop a two-particle irreducible (2PI) strong-coupling approach to the disordered BHM that allows us to treat both equilibrium and out-of-equilibrium situations. We obtain equations of motion for spatio-temporal correlations and explore their equilibrium solutions. We study the equilibrium phase diagram as a function of disorder strength and discuss applications of the formalism to out-of-equilibrium situations. We also note that the disorder strengths where the emergence of non-ergodic dynamics was observed in a recent experiment [Choi et al. (2016) [61]] appear to correspond to the Mott insulator – Bose Glass phase boundary.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThe authors thank NSERC for support of this work.en_US
dc.identifier.citationMokhtari-Jazi, A., Fitzpatrick, M. R. C., & Kennett, M. P. (2023). Contour-time approach to the disordered Bose-Hubbard model in the strong coupling regime. Nuclear Physics B, 997, 116386. https://doi.org/10.1016/j.nuclphysb.2023.116386en_US
dc.identifier.urihttps://doi.org/10.1016/j.nuclphysb.2023.116386
dc.identifier.urihttp://hdl.handle.net/1828/15960
dc.language.isoenen_US
dc.publisherNuclear Physics Ben_US
dc.titleContour-time approach to the disordered Bose-Hubbard model in the strong coupling regimeen_US
dc.typeArticleen_US

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