{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:CSECQHM4G63HKEDW6X4GFFEDJW","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":"9207db0df454f46428603366d2aee99ba4612eec6946fcc45d67e41145f6ae24","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-12-11T04:10:57Z","title_canon_sha256":"b34162d488281f358a30f4ec8bb14d7a7558f91432f769aa4d6cfce20945177b"},"schema_version":"1.0","source":{"id":"1812.04213","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.04213","created_at":"2026-07-05T00:46:44Z"},{"alias_kind":"arxiv_version","alias_value":"1812.04213v2","created_at":"2026-07-05T00:46:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.04213","created_at":"2026-07-05T00:46:44Z"},{"alias_kind":"pith_short_12","alias_value":"CSECQHM4G63H","created_at":"2026-07-05T00:46:44Z"},{"alias_kind":"pith_short_16","alias_value":"CSECQHM4G63HKEDW","created_at":"2026-07-05T00:46:44Z"},{"alias_kind":"pith_short_8","alias_value":"CSECQHM4","created_at":"2026-07-05T00:46:44Z"}],"graph_snapshots":[{"event_id":"sha256:90a4b6007764f36d334f1a7ed4a2f5858f4438dbc8221dcf93f2075850010dba","target":"graph","created_at":"2026-07-05T00:46:44Z","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/1812.04213/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use self-consistent Hartree-Fock calculations performed in the full $\\pi$-band Hilbert space to assess the nature of the recently discovered correlated insulator states in magic-angle twisted bilayer graphene (TBG). We find that gaps between the flat conduction and valence bands open at neutrality over a wide range of twist angles, sometimes without breaking the system's valley projected ${\\cal C}_{2}{\\cal T}$ symmetry. Broken spin/valley flavor symmetries then enable gapped states to form not only at neutrality, but also at total moir\\'e band filling $n = \\pm p/4$ with integer $p = 1, 2, 3","authors_text":"Allan H. MacDonald, Ming Xie","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-12-11T04:10:57Z","title":"On the nature of the correlated insulator states in twisted bilayer graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.04213","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:d8b1025e97318342541061de5a6497236471b32333ea6459a579330995ffbaa5","target":"record","created_at":"2026-07-05T00:46:44Z","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":"9207db0df454f46428603366d2aee99ba4612eec6946fcc45d67e41145f6ae24","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-12-11T04:10:57Z","title_canon_sha256":"b34162d488281f358a30f4ec8bb14d7a7558f91432f769aa4d6cfce20945177b"},"schema_version":"1.0","source":{"id":"1812.04213","kind":"arxiv","version":2}},"canonical_sha256":"1488281d9c37b6751076f5f86294834d8248f9a17848609e66964ecf157dc30a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1488281d9c37b6751076f5f86294834d8248f9a17848609e66964ecf157dc30a","first_computed_at":"2026-07-05T00:46:44.335954Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:46:44.335954Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"abZuqgpJx1Wk3GPd0MsUSQESgwq8dJXRZOlmy/4TKzEK7nybXhKvaanRB5iB+j7OFk4NNO4iZthnNc34By9MAw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:46:44.336494Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.04213","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d8b1025e97318342541061de5a6497236471b32333ea6459a579330995ffbaa5","sha256:90a4b6007764f36d334f1a7ed4a2f5858f4438dbc8221dcf93f2075850010dba"],"state_sha256":"49e94b50196a34e4c03243b9596b551da5d267f2f02841229173a77ea54e29fb"}