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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7992
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dc.contributor.authorNehra, Ritu-
dc.contributor.authorRoy, Dibyendu-
dc.date.accessioned2022-09-06T10:25:44Z-
dc.date.available2022-09-06T10:25:44Z-
dc.date.issued2022-05-04-
dc.identifier.citationPhysical Review B, 2022, 105, p195407en_US
dc.identifier.issn2469-9950-
dc.identifier.issn2469-9969 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7992-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en_US
dc.description.abstractThe multipartite non-Hermitian Su-Schrieffer-Heeger model is explored as a prototypical example of one-dimensional systems with several sublattice sites for unveiling intriguing insulating and metallic phases with no Hermitian counterparts. These phases are characterized by composite cyclic loops of multiple complex-energy bands encircling single or multiple exceptional points (EPs) on the parametric space of real and imaginary energy. We show the topology of these composite loops is similar to well-known topological objects like Möbius strips and Penrose triangles, and can be quantified by a nonadiabatic cyclic geometric phase which includes contributions only from the participating bands. We analytically derive a complete phase diagram with the phase boundaries of the model. We further examine the connection between encircling of multiple EPs by complex-energy bands on parametric space and associated topology.en_US
dc.language.isoenen_US
dc.publisherAmerical Physical Societyen_US
dc.relation.urihttps://arxiv.org/abs/2201.12297en_US
dc.relation.urihttps://doi.org/10.1103/PhysRevB.105.195407en_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2022PhRvB.105s5407N/abstracten_US
dc.rights2022 American Physical Socityen_US
dc.subjectnon-Hermitian physicsen_US
dc.subjecttopologyen_US
dc.subjectcomposite loopsen_US
dc.subjectComplex Zak phaseen_US
dc.subjectComposite Zak phaseen_US
dc.subjecttopological invarianten_US
dc.subjectPenrose triagleen_US
dc.titleTopology of multipartite non-Hermitian one-dimensional systemsen_US
dc.typeArticleen_US
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