{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T15:02:41Z","timestamp":1784386961975,"version":"3.55.0"},"reference-count":100,"publisher":"Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften","license":[{"start":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T00:00:00Z","timestamp":1784332800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"JSPS KAKENHI Grants","award":["JP23K25790"],"award-info":[{"award-number":["JP23K25790"]}]},{"name":"JSPS KAKENHI Grants","award":["JP23K25783"],"award-info":[{"award-number":["JP23K25783"]}]},{"name":"MEXT KAKENHI Grant-in-Aid for Transformative Research Areas A \u201cExtreme Universe\u201d","award":["JP21H05191"],"award-info":[{"award-number":["JP21H05191"]}]},{"name":"JSPS Grant-in-Aid for Scientific Research","award":["20H05860"],"award-info":[{"award-number":["20H05860"]}]},{"name":"JSPS Grant-in-Aid for Scientific Research","award":["23K17689"],"award-info":[{"award-number":["23K17689"]}]},{"name":"JSPS Grant-in-Aid for Scientific Research","award":["23K25865"],"award-info":[{"award-number":["23K25865"]}]},{"name":"JST PRESTO Grant","award":["JPMJPR225A"],"award-info":[{"award-number":["JPMJPR225A"]}]},{"name":"JST Moonshot R&D Grant","award":["JPMJMS2061"],"award-info":[{"award-number":["JPMJMS2061"]}]}],"content-domain":{"domain":["quantum-journal.org"],"crossmark-restriction":false},"short-container-title":["Quantum"],"abstract":"\n Quantum many-body scars (QMBS) serve as important examples of ergodicity-breaking phenomena in quantum many-body systems. Despite recent extensive studies, exact QMBS are rare in dimensions higher than one. In this paper, we study a two-dimensional quantum\n \n \n \n Z<\/mml:mi>\n <\/mml:mrow>\n 2<\/mml:mn>\n <\/mml:msub>\n <\/mml:math>\n gauge model that is dual to a two-dimensional spin-\n \n 1<\/mml:mn>\n \n \/<\/mml:mo>\n <\/mml:mrow>\n 2<\/mml:mn>\n <\/mml:math>\n XY model defined on bipartite graphs. We identify the exact eigenstates of the XY model with a tower structure as exact QMBS. Exploiting the duality transformation, we show that the exact QMBS of the XY model (and XXZ model) after the transformation are the exact QMBS of the dual\n \n \n \n Z<\/mml:mi>\n <\/mml:mrow>\n 2<\/mml:mn>\n <\/mml:msub>\n <\/mml:math>\n gauge model. This construction is versatile and has potential applications for finding new QMBS in other higher-dimensional models.\n <\/jats:p>","DOI":"10.22331\/q-2026-07-18-2164","type":"journal-article","created":{"date-parts":[[2026,7,18]],"date-time":"2026-07-18T14:08:27Z","timestamp":1784383707000},"page":"2164","update-policy":"https:\/\/doi.org\/10.22331\/q-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Exact Quantum Many-Body Scars in 2D Quantum Gauge Models"],"prefix":"10.22331","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2086-1900","authenticated-orcid":false,"given":"Yuan","family":"Miao","sequence":"first","affiliation":[{"name":"Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linhao","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Physics, The Pennsylvania State University, University Park, Pennsylvania, 16802, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4887-2134","authenticated-orcid":false,"given":"Hosho","family":"Katsura","sequence":"additional","affiliation":[{"name":"Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan"},{"name":"Institute for Physics of Intelligence, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan"},{"name":"Trans-scale Quantum Science Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahito","family":"Yamazaki","sequence":"additional","affiliation":[{"name":"Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan"},{"name":"Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan"},{"name":"Trans-scale Quantum Science Institute, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"9598","published-online":{"date-parts":[[2026,7,18]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"J. 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