Publication:
Topological two-body bands in a multiband Hubbard model

dc.contributor.departmentDepartment of Physics
dc.contributor.kuauthorIşkın, Menderes
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.date.accessioned2025-01-19T10:31:47Z
dc.date.issued2023
dc.description.abstractIn a multiband Hubbard model the self-consistency relations for the two-body bound-state bands are in the form of a nonlinear eigenvalue problem. Assuming that the resultant eigenvectors form an orthonormal set, e.g., in the strong-binding regime, here we reformulate their Berry curvatures and the associated Chern numbers. As an illustration we solve the two-body problem in a Haldane-Hubbard model with attractive on-site interactions and analyze its topological phase diagrams from weak to strong couplings, i.e., by keeping track of the gap closings in between the low-lying two-body bands. The resultant Chern numbers are consistent with the lobe structure of the phase diagrams in the strong-coupling regime.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue5
dc.description.openaccessGreen Submitted
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.volume107
dc.identifier.doi10.1103/PhysRevA.107.053323
dc.identifier.eissn2469-9934
dc.identifier.issn2469-9926
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-85161201562
dc.identifier.urihttps://doi.org/10.1103/PhysRevA.107.053323
dc.identifier.urihttps://hdl.handle.net/20.500.14288/26288
dc.identifier.wos1010708900002
dc.keywordsOptics
dc.keywordsPhysics, Atomic, Molecular and Chemical
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review A
dc.subjectPhysics
dc.titleTopological two-body bands in a multiband Hubbard model
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorIşkın, Menderes
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Physics
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