{"paper":{"title":"Non-ergodic quantum operator dynamics from causal constraints","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.other","math-ph","math.MP"],"primary_cat":"quant-ph","authors_text":"Christopher J. Turner, Llu\\'is Masanes, Marcell D. Kov\\'acs","submitted_at":"2026-02-06T18:09:26Z","abstract_excerpt":"This paper explores a route to non-ergodic quantum dynamics where algebraic restrictions in operator space arise from local constraints on the causal light cone. We model this through tri-partite unitaries (we dub 'walls') that permanently arrest local operator spreading in periodic time-evolution. We show that the structure of the resulting causally independent subsystems can be understood rigorously through the invariance of embedded operator algebras (ie. super-operator symmetries). Our work involves a detailed study of local conserved quantities and generalisation to time-dependent dynamic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.06913","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2602.06913/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}