{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:6T33EAQVW3NR23E34DSQLAVO6V","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":"b8c122f093142985a6bbdd83f51ba59528935c14cccdfaa49756cd4d6a66b299","cross_cats_sorted":["cond-mat.str-el","physics.chem-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2018-04-26T07:35:56Z","title_canon_sha256":"b92d53bce67c911c0c175562b1d4892a145e6ff1c532664d22077fbb4e89272c"},"schema_version":"1.0","source":{"id":"1804.09921","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.09921","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"arxiv_version","alias_value":"1804.09921v2","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.09921","created_at":"2026-05-18T00:00:30Z"},{"alias_kind":"pith_short_12","alias_value":"6T33EAQVW3NR","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"6T33EAQVW3NR23E3","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"6T33EAQV","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:7ecb58af881b00d66d3e117aeb5af96e266c54e6b71127d2d20a16fec6f3e4b1","target":"graph","created_at":"2026-05-18T00:00:30Z","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":"We develop a systematic approach to construct energy functionals of the one-particle reduced density matrix (1RDM) for equilibrium systems at finite temperature. The starting point of our formulation is the grand potential $\\Omega [\\mathbf{G}]$ regarded as variational functional of the Green's function $G$ based on diagrammatic many-body perturbation theory and for which we consider either the Klein or Luttinger-Ward form. By restricting the input Green's function to be one-to-one related to a set on one-particle reduced density matrices (1RDM) this functional becomes a functional of the 1RDM.","authors_text":"Anna-Maija Uimonen, Klaas J. H. Giesbertz, Robert van Leeuwen","cross_cats":["cond-mat.str-el","physics.chem-ph","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2018-04-26T07:35:56Z","title":"Approximate energy functionals for one-body reduced density matrix functional theory from many-body perturbation theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.09921","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":"sha256:28d65b9ad5a59c31b8db1f62bf4d947d0249dc952753dc98e8283e1124b95370","target":"record","created_at":"2026-05-18T00:00:30Z","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":"b8c122f093142985a6bbdd83f51ba59528935c14cccdfaa49756cd4d6a66b299","cross_cats_sorted":["cond-mat.str-el","physics.chem-ph","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.other","submitted_at":"2018-04-26T07:35:56Z","title_canon_sha256":"b92d53bce67c911c0c175562b1d4892a145e6ff1c532664d22077fbb4e89272c"},"schema_version":"1.0","source":{"id":"1804.09921","kind":"arxiv","version":2}},"canonical_sha256":"f4f7b20215b6db1d6c9be0e50582aef5668326b3e40b127863f9d427fc2583e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4f7b20215b6db1d6c9be0e50582aef5668326b3e40b127863f9d427fc2583e1","first_computed_at":"2026-05-18T00:00:30.405643Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:30.405643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DMuUgCaOfS0jTZPLS8h1DQwWCtOOPQmKMSJQve5NjCEEmtaE5IoDcWlUMO8uCNHe49Ip8xUyVHk++HTmtpu2DA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:30.406389Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.09921","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28d65b9ad5a59c31b8db1f62bf4d947d0249dc952753dc98e8283e1124b95370","sha256:7ecb58af881b00d66d3e117aeb5af96e266c54e6b71127d2d20a16fec6f3e4b1"],"state_sha256":"f120f77de5645f48d055019df83c7d9a6037203f3739b7e7939b6cbf6981bedd"}