{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:MZFGG6VNY63DHFWN4QPTWFRGNI","short_pith_number":"pith:MZFGG6VN","schema_version":"1.0","canonical_sha256":"664a637aadc7b63396cde41f3b16266a38e9d5c2a5056526e57cda5efecc1bc4","source":{"kind":"arxiv","id":"1911.11835","version":2},"attestation_state":"computed","paper":{"title":"Nature of symmetry breaking at the excitonic insulator transition: Ta$_2$NiSe$_5$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrew J. Millis, Angel Rubio, Antoine Georges, Giacomo Mazza, Hannes H\\\"ubener, Lukas Windg\\\"atter, Malte R\\\"osner, Simone Latini","submitted_at":"2019-11-26T21:09:53Z","abstract_excerpt":"Ta$_2$NiSe$_5$ is one of the most promising materials for hosting an excitonic insulator ground state. While a number of experimental observations have been interpreted in this way, the precise nature of the symmetry breaking occurring in Ta$_2$NiSe$_5$, the electronic order parameter, and a realistic microscopic description of the transition mechanism are, however, missing. By a symmetry analysis based on first-principles calculations, we uncover the \\emph{discrete} lattice symmetries which are broken at the transition. We identify a purely electronic order parameter of excitonic nature that "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1911.11835","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-26T21:09:53Z","cross_cats_sorted":[],"title_canon_sha256":"1c767dca834b5a0dda82cdab932a61948da13a2d89fc9bf1a47a01415f07ba64","abstract_canon_sha256":"8f892b24f53de9d9078b33948a0974e68a66c32cea047e6186545b43874b8341"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:10:12.924773Z","signature_b64":"7s24u2coA7pBmVRC8tQApsbX0naicWVCIKsHWZhX4jbLs88E69IbuYzQ4pFGbrVHU9OM8VLGN7F7mEf8GtjTBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"664a637aadc7b63396cde41f3b16266a38e9d5c2a5056526e57cda5efecc1bc4","last_reissued_at":"2026-07-05T01:10:12.924305Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:10:12.924305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Nature of symmetry breaking at the excitonic insulator transition: Ta$_2$NiSe$_5$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrew J. Millis, Angel Rubio, Antoine Georges, Giacomo Mazza, Hannes H\\\"ubener, Lukas Windg\\\"atter, Malte R\\\"osner, Simone Latini","submitted_at":"2019-11-26T21:09:53Z","abstract_excerpt":"Ta$_2$NiSe$_5$ is one of the most promising materials for hosting an excitonic insulator ground state. While a number of experimental observations have been interpreted in this way, the precise nature of the symmetry breaking occurring in Ta$_2$NiSe$_5$, the electronic order parameter, and a realistic microscopic description of the transition mechanism are, however, missing. By a symmetry analysis based on first-principles calculations, we uncover the \\emph{discrete} lattice symmetries which are broken at the transition. We identify a purely electronic order parameter of excitonic nature that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.11835","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1911.11835/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1911.11835","created_at":"2026-07-05T01:10:12.924372+00:00"},{"alias_kind":"arxiv_version","alias_value":"1911.11835v2","created_at":"2026-07-05T01:10:12.924372+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.11835","created_at":"2026-07-05T01:10:12.924372+00:00"},{"alias_kind":"pith_short_12","alias_value":"MZFGG6VNY63D","created_at":"2026-07-05T01:10:12.924372+00:00"},{"alias_kind":"pith_short_16","alias_value":"MZFGG6VNY63DHFWN","created_at":"2026-07-05T01:10:12.924372+00:00"},{"alias_kind":"pith_short_8","alias_value":"MZFGG6VN","created_at":"2026-07-05T01:10:12.924372+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI","json":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI.json","graph_json":"https://pith.science/api/pith-number/MZFGG6VNY63DHFWN4QPTWFRGNI/graph.json","events_json":"https://pith.science/api/pith-number/MZFGG6VNY63DHFWN4QPTWFRGNI/events.json","paper":"https://pith.science/paper/MZFGG6VN"},"agent_actions":{"view_html":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI","download_json":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI.json","view_paper":"https://pith.science/paper/MZFGG6VN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1911.11835&json=true","fetch_graph":"https://pith.science/api/pith-number/MZFGG6VNY63DHFWN4QPTWFRGNI/graph.json","fetch_events":"https://pith.science/api/pith-number/MZFGG6VNY63DHFWN4QPTWFRGNI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI/action/storage_attestation","attest_author":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI/action/author_attestation","sign_citation":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI/action/citation_signature","submit_replication":"https://pith.science/pith/MZFGG6VNY63DHFWN4QPTWFRGNI/action/replication_record"}},"created_at":"2026-07-05T01:10:12.924372+00:00","updated_at":"2026-07-05T01:10:12.924372+00:00"}