{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZCPU5X74OR3T3NMUPVJ4DCULTV","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":"45a7c3a4fede3d3162779a782ffa173faa93e7401f080b74a974a50b08f0e874","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-04-30T15:18:52Z","title_canon_sha256":"bc0e4113b429bcf3d007fad9ee4058b576589f2da8598d68b4d1896e5bed531c"},"schema_version":"1.0","source":{"id":"1204.6667","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.6667","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"arxiv_version","alias_value":"1204.6667v2","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.6667","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"pith_short_12","alias_value":"ZCPU5X74OR3T","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZCPU5X74OR3T3NMU","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZCPU5X74","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:9b311d0b08f4ef004f92b7023cb470c5735f3ffa0676e4e629c55f61499054f3","target":"graph","created_at":"2026-05-18T03:26:41Z","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"},"paper":{"abstract_excerpt":"Using a configuration-interaction variational method, we accurately compute the reduced, single-electron von Neumann entropy for several low-energy, singlet and triplet eigenstates of helium atom. We estimate the amount of electron-electron orbital entanglement for such eigenstates and show that it decays with energy.","authors_text":"Giuliano Benenti, Giuliano Strini, Stefano Siccardi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-04-30T15:18:52Z","title":"Entanglement in helium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.6667","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":"sha256:2fe8a4a74a541f4c6e654d8ee9457bf74dcdf5375ccdc69c61d1f4fc80233c0d","target":"record","created_at":"2026-05-18T03:26:41Z","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":"45a7c3a4fede3d3162779a782ffa173faa93e7401f080b74a974a50b08f0e874","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-04-30T15:18:52Z","title_canon_sha256":"bc0e4113b429bcf3d007fad9ee4058b576589f2da8598d68b4d1896e5bed531c"},"schema_version":"1.0","source":{"id":"1204.6667","kind":"arxiv","version":2}},"canonical_sha256":"c89f4edffc74773db5947d53c18a8b9d5ea4df09671b745aa9e3523c019a30d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c89f4edffc74773db5947d53c18a8b9d5ea4df09671b745aa9e3523c019a30d7","first_computed_at":"2026-05-18T03:26:41.300963Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:26:41.300963Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"t8C4Z/36DLb5r8z3SRd2EGc7FbSjW+BGYc6SFDyYvq9yoBnsMLvF6auERmrRwkF7KhnVhtnGWMW5/lsUKpJsCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:26:41.301714Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.6667","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fe8a4a74a541f4c6e654d8ee9457bf74dcdf5375ccdc69c61d1f4fc80233c0d","sha256:9b311d0b08f4ef004f92b7023cb470c5735f3ffa0676e4e629c55f61499054f3"],"state_sha256":"973a6261874efae341c69e81aef2ebe7967cdcb64dc4de6c9afc209ba6464b22"}