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dc.contributor.authorElse, Dominic V.
dc.contributor.authorPo, Hoi Chun
dc.contributor.authorWatanabe, Haruki
dc.date.accessioned2020-05-07T20:30:01Z
dc.date.available2020-05-07T20:30:01Z
dc.date.issued2019-03
dc.date.submitted2019-03
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.urihttps://hdl.handle.net/1721.1/125124
dc.description.abstractTopological phases of matter are defined by their nontrivial patterns of ground-state quantum entanglement, which is irremovable so long as the excitation gap and the protecting symmetries, if any, are maintained. Recent studies on noninteracting electrons in crystals have unveiled a peculiar variety of topological phases, which harbor nontrivial entanglement that can be dissolved simply by the the addition of entanglement-free, but charged, degrees of freedom. Such topological phases have a weaker sense of robustness than their conventional counterparts, and are therefore dubbed “fragile topological phases.” In this work, we show that fragile topology is a general concept prevailing beyond systems of noninteracting electrons. Fragile topological phases can generally occur when a system has a U(1) charge conservation symmetry, such that only particles with one sign of the charge are physically allowed (e.g., electrons but not positrons). We demonstrate that fragile topological phases exist in interacting systems of both fermions and of bosons.en_US
dc.description.sponsorshipNational Science Foundation (Grant PHY-1748958)en_US
dc.publisherAmerican Physical Society (APS)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/physrevb.99.125122en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Physical Societyen_US
dc.titleFragile topological phases in interacting systemsen_US
dc.typeArticleen_US
dc.identifier.citationElse, Dominic V. et al. "Fragile topological phases in interacting systems." Physical Review B 99, 12 (March 2019): 125122 © 2019 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.relation.journalPhysical Review Ben_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2019-03-15T18:00:15Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsElse, Dominic V.; Po, Hoi Chun; Watanabe, Harukien_US
dspace.embargo.termsNen_US
dspace.date.submission2019-04-04T15:53:22Z
mit.journal.volume99en_US
mit.journal.issue12en_US
mit.licensePUBLISHER_POLICYen_US


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