{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:3RNF6DSJ5EW544ZCXFWVNSB6WA","short_pith_number":"pith:3RNF6DSJ","schema_version":"1.0","canonical_sha256":"dc5a5f0e49e92dde7322b96d56c83eb0337cca211ef08c38904db1b4a1f6e76d","source":{"kind":"arxiv","id":"1111.3998","version":2},"attestation_state":"computed","paper":{"title":"Many-body approximations for atomic binding energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","nucl-th"],"primary_cat":"physics.atom-ph","authors_text":"Calvin W. Johnson, Joshua T. Staker, Micah D. Schuster","submitted_at":"2011-11-17T01:17:39Z","abstract_excerpt":"We benchmark three standard approximations for the many-body problem -- the Hartree-Fock, projected Hartree-Fock, and random phase approximations -- against full numerical configuration-interaction calculations of the electronic structure of atoms, from Li through to Ne. These configuration-interaction calculations used up to $2 \\times 10^8$ uncoupled basis states, equivalent to $ 10^7$ coupled basis states (configuration state functions.) Each method uses exactly the same input, i.e., the same single-particle basis and Coulomb matrix elements, so any differences are strictly due to the approx"},"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":"1111.3998","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-11-17T01:17:39Z","cross_cats_sorted":["cond-mat.quant-gas","nucl-th"],"title_canon_sha256":"5723ae6cc94f601adefbbddc8916189306ef8ac513a123eeff25d940a3e25df5","abstract_canon_sha256":"8d21eabe9207473ce7249db96f0998da8c33d59b233ab49e3f2c5e7359024b85"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:47.542931Z","signature_b64":"nMX2XzSLxdiJso3b2I+Xu8V5qNsErHqZrPND4/1ohynpcSPlwNHkNSX69h4FobLeij3j43YC/zSHUUCGfIFuCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dc5a5f0e49e92dde7322b96d56c83eb0337cca211ef08c38904db1b4a1f6e76d","last_reissued_at":"2026-05-18T03:46:47.542120Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:47.542120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Many-body approximations for atomic binding energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","nucl-th"],"primary_cat":"physics.atom-ph","authors_text":"Calvin W. Johnson, Joshua T. Staker, Micah D. Schuster","submitted_at":"2011-11-17T01:17:39Z","abstract_excerpt":"We benchmark three standard approximations for the many-body problem -- the Hartree-Fock, projected Hartree-Fock, and random phase approximations -- against full numerical configuration-interaction calculations of the electronic structure of atoms, from Li through to Ne. These configuration-interaction calculations used up to $2 \\times 10^8$ uncoupled basis states, equivalent to $ 10^7$ coupled basis states (configuration state functions.) Each method uses exactly the same input, i.e., the same single-particle basis and Coulomb matrix elements, so any differences are strictly due to the approx"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.3998","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":""},"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":"1111.3998","created_at":"2026-05-18T03:46:47.542251+00:00"},{"alias_kind":"arxiv_version","alias_value":"1111.3998v2","created_at":"2026-05-18T03:46:47.542251+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.3998","created_at":"2026-05-18T03:46:47.542251+00:00"},{"alias_kind":"pith_short_12","alias_value":"3RNF6DSJ5EW5","created_at":"2026-05-18T12:26:18.847500+00:00"},{"alias_kind":"pith_short_16","alias_value":"3RNF6DSJ5EW544ZC","created_at":"2026-05-18T12:26:18.847500+00:00"},{"alias_kind":"pith_short_8","alias_value":"3RNF6DSJ","created_at":"2026-05-18T12:26:18.847500+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/3RNF6DSJ5EW544ZCXFWVNSB6WA","json":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA.json","graph_json":"https://pith.science/api/pith-number/3RNF6DSJ5EW544ZCXFWVNSB6WA/graph.json","events_json":"https://pith.science/api/pith-number/3RNF6DSJ5EW544ZCXFWVNSB6WA/events.json","paper":"https://pith.science/paper/3RNF6DSJ"},"agent_actions":{"view_html":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA","download_json":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA.json","view_paper":"https://pith.science/paper/3RNF6DSJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1111.3998&json=true","fetch_graph":"https://pith.science/api/pith-number/3RNF6DSJ5EW544ZCXFWVNSB6WA/graph.json","fetch_events":"https://pith.science/api/pith-number/3RNF6DSJ5EW544ZCXFWVNSB6WA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA/action/storage_attestation","attest_author":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA/action/author_attestation","sign_citation":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA/action/citation_signature","submit_replication":"https://pith.science/pith/3RNF6DSJ5EW544ZCXFWVNSB6WA/action/replication_record"}},"created_at":"2026-05-18T03:46:47.542251+00:00","updated_at":"2026-05-18T03:46:47.542251+00:00"}