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dc.contributor.authorThorngren, Ryan
dc.contributor.authorMetlitski, Maxim A.
dc.date.accessioned2018-09-11T18:44:50Z
dc.date.available2018-09-11T18:44:50Z
dc.date.issued2018-08
dc.date.submitted2018-06
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.urihttp://hdl.handle.net/1721.1/117718
dc.description.abstractIt is well known that theorems of Lieb-Schultz-Mattis type prohibit the existence of a trivial symmetric gapped ground state in certain systems possessing a combination of internal and lattice symmetries. In the continuum description of such systems, the Lieb-Schultz-Mattis theorem is manifested in the form of a quantum anomaly afflicting the symmetry. We demonstrate this phenomenon in the context of the deconfined critical point between a Neel state and a valence bond solid in an S=1/2 square lattice antiferromagnet and compare it to the case of S=1/2 honeycomb lattice where no anomaly is present. We also point out that new anomalies, unrelated to the microscopic Lieb-Schultz-Mattis theorem, can emerge, prohibiting the existence of a trivial gapped state in the immediate vicinity of critical points or phases. For instance, no translationally invariant weak perturbation of the S=1/2 gapless spin chain can open up a trivial gap even if the spin-rotation symmetry is explicitly broken. The same result holds for the S=1/2 deconfined critical point on a square lattice.en_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.98.085140en_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.titleIntrinsic and emergent anomalies at deconfined critical pointsen_US
dc.typeArticleen_US
dc.identifier.citationMetlitski, Max A., and Ryan Thorngren. “Intrinsic and Emergent Anomalies at Deconfined Critical Points.” Physical Review B, vol. 98, no. 8, Aug. 2018. © 2018 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.mitauthorMetlitski, Maxim A.
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.updated2018-08-24T18:00:19Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsMetlitski, Max A.; Thorngren, Ryanen_US
dspace.embargo.termsNen_US
mit.licensePUBLISHER_POLICYen_US


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