{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:NJ75PSBZS27Z4Y2E3KLT4XVCWW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"13178ed710144aafc85fdc096fcc15c4e05846d7d6615eec930555db27b1b87f","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2024-01-29T19:00:10Z","title_canon_sha256":"682f5df01b890912c53b85ceda70081f721cec161cd604278532f7c5415ede10"},"schema_version":"1.0","source":{"id":"2401.16480","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2401.16480","created_at":"2026-07-05T09:21:25Z"},{"alias_kind":"arxiv_version","alias_value":"2401.16480v1","created_at":"2026-07-05T09:21:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2401.16480","created_at":"2026-07-05T09:21:25Z"},{"alias_kind":"pith_short_12","alias_value":"NJ75PSBZS27Z","created_at":"2026-07-05T09:21:25Z"},{"alias_kind":"pith_short_16","alias_value":"NJ75PSBZS27Z4Y2E","created_at":"2026-07-05T09:21:25Z"},{"alias_kind":"pith_short_8","alias_value":"NJ75PSBZ","created_at":"2026-07-05T09:21:25Z"}],"graph_snapshots":[{"event_id":"sha256:f5b673a4aa11ca0e5a9c127b7a434cef755bf266bd38b4e252244d9e38f10190","target":"graph","created_at":"2026-07-05T09:21:25Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2401.16480/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce a one-dimensional (1D) extended quantum breakdown model comprising a fermionic and a spin degree of freedom per site, and featuring a spatially asymmetric breakdown-type interaction between the fermions and spins. We analytically show that, in the absence of any magnetic field for the spins, the model exhibits Hilbert space fragmentation within each symmetry sector into exponentially many Krylov subspaces and hence displays non-thermal dynamics. Here, we demonstrate that the fragmentation naturally occurs in an entangled basis and thus provides an example of \"quantum fragmentation","authors_text":"Abhinav Prem, Biao Lian, Bo-Ting Chen, Nicolas Regnault","cross_cats":["cond-mat.stat-mech","quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2024-01-29T19:00:10Z","title":"Quantum Fragmentation in the Extended Quantum Breakdown Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.16480","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:46625e8a8b6869d2846dce0853d7974d276412149a2e609c2114b719d011d350","target":"record","created_at":"2026-07-05T09:21:25Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"13178ed710144aafc85fdc096fcc15c4e05846d7d6615eec930555db27b1b87f","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2024-01-29T19:00:10Z","title_canon_sha256":"682f5df01b890912c53b85ceda70081f721cec161cd604278532f7c5415ede10"},"schema_version":"1.0","source":{"id":"2401.16480","kind":"arxiv","version":1}},"canonical_sha256":"6a7fd7c83996bf9e6344da973e5ea2b5ad459ea588908e098d5f1b469bddfbb4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a7fd7c83996bf9e6344da973e5ea2b5ad459ea588908e098d5f1b469bddfbb4","first_computed_at":"2026-07-05T09:21:25.531804Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:21:25.531804Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qlKBnkCXd4niGL5P/z3ZEaHa6oHiDjkiZ6kWk2k5l6FIwRJIFisk1aKOK/AftpJtU8/PGekiPvLxQ6H3lfjwCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:21:25.532345Z","signed_message":"canonical_sha256_bytes"},"source_id":"2401.16480","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:46625e8a8b6869d2846dce0853d7974d276412149a2e609c2114b719d011d350","sha256:f5b673a4aa11ca0e5a9c127b7a434cef755bf266bd38b4e252244d9e38f10190"],"state_sha256":"ac8a4ea1d941f464f55d438bbc7f9871645c22a8c652425a8d3eadb602ae5bed"}