{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:QLUCCXOTRZPZZUCLXZ3XKIRWJD","short_pith_number":"pith:QLUCCXOT","schema_version":"1.0","canonical_sha256":"82e8215dd38e5f9cd04bbe7775223648c8564ff7fbcd13001fffe759c518e67b","source":{"kind":"arxiv","id":"1404.0902","version":1},"attestation_state":"computed","paper":{"title":"The derivative discontinuity of the exchange-correlation functional","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.chem-ph","authors_text":"Aron J. Cohen, Paula Mori-S\\'anchez","submitted_at":"2014-04-03T13:27:42Z","abstract_excerpt":"The derivative discontinuity is a key concept in electronic structure theory in general and density functional theory in particular. The electronic energy of a quantum system exhibits derivative discontinuities with respect to different degrees of freedom that are a consequence of the integer nature of electrons. The classical understanding refers to the derivative discontinuity of the total energy as a function of the total number of electrons ($N$), but it can also manifest at constant $N$. Examples are shown in models including several Hydrogen systems with varying numbers of electrons or n"},"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":"1404.0902","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2014-04-03T13:27:42Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"b2326931d2f09da93a06fbcdc707a5feb4b333f22cf645146b69ce758197471c","abstract_canon_sha256":"558f12804918f594c62dfceb54faccf3e94d1d3689fbe42068e69caad40779bb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:25.354382Z","signature_b64":"8iCHTetslHA12YDZDp4soUF4IPPREzFJxcLZdLG9DUrsugYdEmk2zzXC4Ktjl3foQs004sGGYU/YEN1BDMOgAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82e8215dd38e5f9cd04bbe7775223648c8564ff7fbcd13001fffe759c518e67b","last_reissued_at":"2026-05-18T00:35:25.353744Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:25.353744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The derivative discontinuity of the exchange-correlation functional","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.chem-ph","authors_text":"Aron J. Cohen, Paula Mori-S\\'anchez","submitted_at":"2014-04-03T13:27:42Z","abstract_excerpt":"The derivative discontinuity is a key concept in electronic structure theory in general and density functional theory in particular. The electronic energy of a quantum system exhibits derivative discontinuities with respect to different degrees of freedom that are a consequence of the integer nature of electrons. The classical understanding refers to the derivative discontinuity of the total energy as a function of the total number of electrons ($N$), but it can also manifest at constant $N$. Examples are shown in models including several Hydrogen systems with varying numbers of electrons or n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0902","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":"1404.0902","created_at":"2026-05-18T00:35:25.353826+00:00"},{"alias_kind":"arxiv_version","alias_value":"1404.0902v1","created_at":"2026-05-18T00:35:25.353826+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0902","created_at":"2026-05-18T00:35:25.353826+00:00"},{"alias_kind":"pith_short_12","alias_value":"QLUCCXOTRZPZ","created_at":"2026-05-18T12:28:46.137349+00:00"},{"alias_kind":"pith_short_16","alias_value":"QLUCCXOTRZPZZUCL","created_at":"2026-05-18T12:28:46.137349+00:00"},{"alias_kind":"pith_short_8","alias_value":"QLUCCXOT","created_at":"2026-05-18T12:28:46.137349+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/QLUCCXOTRZPZZUCLXZ3XKIRWJD","json":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD.json","graph_json":"https://pith.science/api/pith-number/QLUCCXOTRZPZZUCLXZ3XKIRWJD/graph.json","events_json":"https://pith.science/api/pith-number/QLUCCXOTRZPZZUCLXZ3XKIRWJD/events.json","paper":"https://pith.science/paper/QLUCCXOT"},"agent_actions":{"view_html":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD","download_json":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD.json","view_paper":"https://pith.science/paper/QLUCCXOT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1404.0902&json=true","fetch_graph":"https://pith.science/api/pith-number/QLUCCXOTRZPZZUCLXZ3XKIRWJD/graph.json","fetch_events":"https://pith.science/api/pith-number/QLUCCXOTRZPZZUCLXZ3XKIRWJD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD/action/storage_attestation","attest_author":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD/action/author_attestation","sign_citation":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD/action/citation_signature","submit_replication":"https://pith.science/pith/QLUCCXOTRZPZZUCLXZ3XKIRWJD/action/replication_record"}},"created_at":"2026-05-18T00:35:25.353826+00:00","updated_at":"2026-05-18T00:35:25.353826+00:00"}