{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"63f6933768f6b79a47c9cbcb01de5c6aab2793a5cf373ddeaf49d45cc9e4c656","created":"2026-10-03T07:17:51Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"8d6bf51ef16ec18b219afebfaa948e53aa0ebda20d67aa01de9d10a302b072e1","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"cm.scars-fragmentation","field":"cm","n":"1","review_cite":"M. Serbyn, D. A. Abanin, Z. Papic, Quantum many-body scars and weak breaking of ergodicity, Nature Physics, 2021","review_link":"https://doi.org/10.1038/s41567-021-01230-2","review_verified":"true","summary":"Some interacting quantum systems contain a few special states that do not thermalize while almost all others do (scars), or have their set of states broken into many disconnected pieces by constraints (fragmentation). Both produce long-lived oscillations seen in cold-atom experiments.","title":"Quantum many-body scars and Hilbert-space fragmentation","topic_ref":null,"why":"They are the main known ways a clean system can partly avoid thermalization, which matters for storing quantum information."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"3b1e0e154649f2c57946e34060cf2af98d1b7646f80dd79c46fd50757079bd2a","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"59e7fca113f8cbef2601cfbaf515e7b42a3a6a03223d9d4dd347ef6b74613b5e","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"nuJlUcvQ3zoLoKf79-kWnPDhf6gjpVg7mRXkiArfFdcsCgeIhVIuQtTJb5kioq_8GYUfE4_oxhlG08iSCtZwDA"},"schema":"pubphys.envelope/1"},"record_hash":"3b1e0e154649f2c57946e34060cf2af98d1b7646f80dd79c46fd50757079bd2a","leaf_index":167}