{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:BOG4LR6CF6EIIO2FS7BBCM7IJY","short_pith_number":"pith:BOG4LR6C","schema_version":"1.0","canonical_sha256":"0b8dc5c7c22f88843b4597c21133e84e26d1ef96f0a83f70a2c5d79e1f6eb3fc","source":{"kind":"arxiv","id":"1312.0970","version":1},"attestation_state":"computed","paper":{"title":"Four-Component Density Matrix Renormalization Group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","physics.comp-ph","quant-ph"],"primary_cat":"physics.chem-ph","authors_text":"Markus Reiher, Ors Legeza, Stefan Knecht","submitted_at":"2013-12-03T22:33:24Z","abstract_excerpt":"We present the first implementation of the relativistic quantum chemical two- and four-component density matrix renormalization group algorithm that includes a variational description of scalar-relativistic effects and spin-orbit coupling. Numerical results based on the four-component Dirac-Coulomb Hamiltonian are presented for the standard reference molecule for correlated relativistic benchmarks: thallium hydride."},"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":"1312.0970","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2013-12-03T22:33:24Z","cross_cats_sorted":["cond-mat.str-el","physics.comp-ph","quant-ph"],"title_canon_sha256":"c088ac6e5ad43123ae1e32993bea9e3d11a52aa5f12a1f7b7264d3fd6a058934","abstract_canon_sha256":"2b9a0e7aecdb27521df975ecd75449ef690ea06c788108e508c01c282ccefbd3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:50:42.676486Z","signature_b64":"gTSJN0fGZBIbKdzvGqwoUiKtIfGYQ3+z0Oz2K5DiJNoAvkLSPDjKYWZBnPidDiExzrIW5cilQ2fOrEZU4zTcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0b8dc5c7c22f88843b4597c21133e84e26d1ef96f0a83f70a2c5d79e1f6eb3fc","last_reissued_at":"2026-05-18T02:50:42.675990Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:50:42.675990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Four-Component Density Matrix Renormalization Group","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","physics.comp-ph","quant-ph"],"primary_cat":"physics.chem-ph","authors_text":"Markus Reiher, Ors Legeza, Stefan Knecht","submitted_at":"2013-12-03T22:33:24Z","abstract_excerpt":"We present the first implementation of the relativistic quantum chemical two- and four-component density matrix renormalization group algorithm that includes a variational description of scalar-relativistic effects and spin-orbit coupling. Numerical results based on the four-component Dirac-Coulomb Hamiltonian are presented for the standard reference molecule for correlated relativistic benchmarks: thallium hydride."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.0970","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"1312.0970","created_at":"2026-05-18T02:50:42.676069+00:00"},{"alias_kind":"arxiv_version","alias_value":"1312.0970v1","created_at":"2026-05-18T02:50:42.676069+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.0970","created_at":"2026-05-18T02:50:42.676069+00:00"},{"alias_kind":"pith_short_12","alias_value":"BOG4LR6CF6EI","created_at":"2026-05-18T12:27:40.988391+00:00"},{"alias_kind":"pith_short_16","alias_value":"BOG4LR6CF6EIIO2F","created_at":"2026-05-18T12:27:40.988391+00:00"},{"alias_kind":"pith_short_8","alias_value":"BOG4LR6C","created_at":"2026-05-18T12:27:40.988391+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/BOG4LR6CF6EIIO2FS7BBCM7IJY","json":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY.json","graph_json":"https://pith.science/api/pith-number/BOG4LR6CF6EIIO2FS7BBCM7IJY/graph.json","events_json":"https://pith.science/api/pith-number/BOG4LR6CF6EIIO2FS7BBCM7IJY/events.json","paper":"https://pith.science/paper/BOG4LR6C"},"agent_actions":{"view_html":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY","download_json":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY.json","view_paper":"https://pith.science/paper/BOG4LR6C","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1312.0970&json=true","fetch_graph":"https://pith.science/api/pith-number/BOG4LR6CF6EIIO2FS7BBCM7IJY/graph.json","fetch_events":"https://pith.science/api/pith-number/BOG4LR6CF6EIIO2FS7BBCM7IJY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY/action/storage_attestation","attest_author":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY/action/author_attestation","sign_citation":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY/action/citation_signature","submit_replication":"https://pith.science/pith/BOG4LR6CF6EIIO2FS7BBCM7IJY/action/replication_record"}},"created_at":"2026-05-18T02:50:42.676069+00:00","updated_at":"2026-05-18T02:50:42.676069+00:00"}