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We find systematic departures from the eigenstate thermalization hypothesis (ETH) in the form of a degenerate set of ETH-violating supersymmetric (SUSY) doublets, also referred to as many-body scars, that we construct analytically. These states are stable against arbitrary SUSY-preserving perturbations, including inhomogeneous couplings. For the specific case of two-leg ladders, we provide extensive numerical evidence that shows how those states are the only ones violating the ETH, and discuss their robustness to SUSY-violating perturbations. Our work suggests a generic mechanism to stabilize quantum many-body scars in lattice models in arbitrary dimensions.<\/jats:p>","DOI":"10.22331\/q-2020-10-07-339","type":"journal-article","created":{"date-parts":[[2020,10,7]],"date-time":"2020-10-07T15:09:04Z","timestamp":1602083344000},"page":"339","source":"Crossref","is-referenced-by-count":24,"title":["Weak-ergodicity-breaking via lattice supersymmetry"],"prefix":"10.22331","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1545-5230","authenticated-orcid":false,"given":"Federica Maria","family":"Surace","sequence":"first","affiliation":[{"name":"The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy, and SISSA, via Bonomea 265, 34136 Trieste, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4742-978X","authenticated-orcid":false,"given":"Giuliano","family":"Giudici","sequence":"additional","affiliation":[{"name":"The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy, and SISSA, via Bonomea 265, 34136 Trieste, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5338-4181","authenticated-orcid":false,"given":"Marcello","family":"Dalmonte","sequence":"additional","affiliation":[{"name":"The Abdus Salam International Center for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy, and SISSA, via Bonomea 265, 34136 Trieste, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"9598","published-online":{"date-parts":[[2020,10,7]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"Coleman, S., Aspects of Symmetry: Selected Erice Lectures (Cambridge University Press, 1985).","DOI":"10.1017\/CBO9780511565045"},{"key":"1","doi-asserted-by":"crossref","unstructured":"Fradkin, E., Field Theories of Condensed Matter Systems (Cambridge University Press, 2013).","DOI":"10.1017\/CBO9781139015509"},{"key":"2","unstructured":"Creutz, M., Quarks, gluons and lattices (Cambridge University Press, Cambridge, 1997)."},{"key":"3","doi-asserted-by":"publisher","unstructured":"Polkovnikov, A., Sengupta, K., Silva, A., and Vengalattore, M., Rev. 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