{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:HKHXBKNP4UUEMP534PNFG4HJK5","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":"c4727fbb3acc8aa31289d28869c42e50a856024c94e617813d077a3ee2413cb4","cross_cats_sorted":["cond-mat.mtrl-sci","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-09-28T18:00:01Z","title_canon_sha256":"68499115549c9acbef84d4eaaf2b61158ce2a7169aa09c1500e5fc3fc76763cc"},"schema_version":"1.0","source":{"id":"2109.13940","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.13940","created_at":"2026-07-05T04:24:48Z"},{"alias_kind":"arxiv_version","alias_value":"2109.13940v2","created_at":"2026-07-05T04:24:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.13940","created_at":"2026-07-05T04:24:48Z"},{"alias_kind":"pith_short_12","alias_value":"HKHXBKNP4UUE","created_at":"2026-07-05T04:24:48Z"},{"alias_kind":"pith_short_16","alias_value":"HKHXBKNP4UUEMP53","created_at":"2026-07-05T04:24:48Z"},{"alias_kind":"pith_short_8","alias_value":"HKHXBKNP","created_at":"2026-07-05T04:24:48Z"}],"graph_snapshots":[{"event_id":"sha256:8c5e90b924fa8ff3cb1602a3523d3fd7bcf77c002c139d5c699b4018ad660782","target":"graph","created_at":"2026-07-05T04:24:48Z","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/2109.13940/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The origin of many quantum-material phenomena is intimately related to the presence of flat electronic bands. In quantum simulation, such bands have been realized through line-graph lattices, a class of lattices known to exhibit flat bands. Based on that work, we conduct a high-throughput screening for line-graph lattices among the crystalline structures of the Materials Flatband Database and report on new candidates for line-graph materials and lattice models. In particular, we find materials with line-graph-lattice structures beyond the two most commonly known examples, the kagom\\'e and pyro","authors_text":"Andrew A. Houck, Annette N. Carroll, Christie S. Chiu, Nicolas Regnault","cross_cats":["cond-mat.mtrl-sci","quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-09-28T18:00:01Z","title":"Line-graph-lattice crystal structures of stoichiometric materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.13940","kind":"arxiv","version":2},"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":"sha256:4e12f3041b5a7667a42349b20b83a011e9ab960bc079544321d4bfc446e39aca","target":"record","created_at":"2026-07-05T04:24:48Z","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":"c4727fbb3acc8aa31289d28869c42e50a856024c94e617813d077a3ee2413cb4","cross_cats_sorted":["cond-mat.mtrl-sci","quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-09-28T18:00:01Z","title_canon_sha256":"68499115549c9acbef84d4eaaf2b61158ce2a7169aa09c1500e5fc3fc76763cc"},"schema_version":"1.0","source":{"id":"2109.13940","kind":"arxiv","version":2}},"canonical_sha256":"3a8f70a9afe528463fbbe3da5370e95766680102f6bf7408c0ffd953bcc80e25","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3a8f70a9afe528463fbbe3da5370e95766680102f6bf7408c0ffd953bcc80e25","first_computed_at":"2026-07-05T04:24:48.489684Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:24:48.489684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J6WtB3C9jKv66apRASM2XrDDXpyaCXA5C9rDzo3g0gFuKPQ7PRN+DAQzIFhkMMjskPAFv81syHgWGbpnwfl4BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:24:48.490111Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.13940","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e12f3041b5a7667a42349b20b83a011e9ab960bc079544321d4bfc446e39aca","sha256:8c5e90b924fa8ff3cb1602a3523d3fd7bcf77c002c139d5c699b4018ad660782"],"state_sha256":"5f7fe218291aab73740f99e28032f159c1d3ec219986bb2fa1cce98e7797e7fd"}