{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:CIWPG6PIKHHMX4PZAENTNEI2H6","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":"d0584f3aa852e7133ea3056f1198d8e6242f150f33972fa1e65ec7cd517c1fb6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-03-10T21:00:12Z","title_canon_sha256":"d0812132cd4dc9c36a2314c5ff8d32283f868ece907b19a547a38784b1088a2a"},"schema_version":"1.0","source":{"id":"1603.03439","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.03439","created_at":"2026-05-18T01:07:56Z"},{"alias_kind":"arxiv_version","alias_value":"1603.03439v2","created_at":"2026-05-18T01:07:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.03439","created_at":"2026-05-18T01:07:56Z"},{"alias_kind":"pith_short_12","alias_value":"CIWPG6PIKHHM","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CIWPG6PIKHHMX4PZ","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CIWPG6PI","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:0a199acb1bede416e502b4aaaab4c7c6cdd804ef72e5dd27d65a607f7e9a0d50","target":"graph","created_at":"2026-05-18T01:07:56Z","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"},"paper":{"abstract_excerpt":"We study the two-dimensional (2D) Hubbard model using exact diagonalization for spin-1/2 fermions on the triangular and honeycomb lattices decorated with a single hexagon per site. In certain parameter ranges, the Hubbard model maps to a quantum compass model on those lattices. On the triangular lattice, the compass model exhibits collinear stripe antiferromagnetism, implying $d$-density wave charge order in the original Hubbard model. On the honeycomb lattice, the compass model has a unique, quantum disordered ground state that transforms nontrivially under lattice reflection. The ground stat","authors_text":"Cheng-Chien Chen, Joseph Maciejko, Lukas Muechler, Roberto Car, Titus Neupert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-03-10T21:00:12Z","title":"Fermionic Symmetry-Protected Topological Phase in a Two-Dimensional Hubbard Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.03439","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":"sha256:7c2a63b17c6e58bf96c7e5b01bbe3220c100777e6c431d4534be49f3355bfeaa","target":"record","created_at":"2026-05-18T01:07:56Z","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":"d0584f3aa852e7133ea3056f1198d8e6242f150f33972fa1e65ec7cd517c1fb6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-03-10T21:00:12Z","title_canon_sha256":"d0812132cd4dc9c36a2314c5ff8d32283f868ece907b19a547a38784b1088a2a"},"schema_version":"1.0","source":{"id":"1603.03439","kind":"arxiv","version":2}},"canonical_sha256":"122cf379e851cecbf1f9011b36911a3f935ba889ea7e43d03f3ef26407e45e60","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"122cf379e851cecbf1f9011b36911a3f935ba889ea7e43d03f3ef26407e45e60","first_computed_at":"2026-05-18T01:07:56.731611Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:07:56.731611Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hFcaXi7NYPhfudmTMgT1cziP5ywnjP5m+bGcPQPIRqPfVOSjrPNi8SgjO2sUm/g1JRx97M6q9Wq61C4nZNoYCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:07:56.732281Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.03439","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7c2a63b17c6e58bf96c7e5b01bbe3220c100777e6c431d4534be49f3355bfeaa","sha256:0a199acb1bede416e502b4aaaab4c7c6cdd804ef72e5dd27d65a607f7e9a0d50"],"state_sha256":"59343812a2c820009a4b95abf1f9c3f46fade8ba7b42d446b2ef85eb7416bcb5"}