{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2003:44K7XPIGABMLM65H3I5OUC7M7C","short_pith_number":"pith:44K7XPIG","schema_version":"1.0","canonical_sha256":"e715fbbd060058b67ba7da3aea0becf886b12149722f3f35990ddd5d3e1d7915","source":{"kind":"arxiv","id":"cond-mat/0303136","version":3},"attestation_state":"computed","paper":{"title":"Variational cluster approach to correlated electron systems in low dimensions","license":"","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"C. Dahnken, M. Aichhorn, M. Potthoff","submitted_at":"2003-03-07T15:40:02Z","abstract_excerpt":"A self-energy-functional approach is applied to construct cluster approximations for correlated lattice models. It turns out that the cluster-perturbation theory (Senechal et al, PRL 84, 522 (2000)) and the cellular dynamical mean-field theory (Kotliar et al, PRL 87, 186401 (2001)) are limiting cases of a more general cluster method. Results for the one-dimensional Hubbard model are discussed with regard to boundary conditions, bath degrees of freedom and cluster size."},"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":"cond-mat/0303136","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2003-03-07T15:40:02Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"d3b3d902c63e46947e6eb3e06feb6225e0945142cd1203d26cc15ddb439abf73","abstract_canon_sha256":"2f04bab8f7d2aafab22fbcbd55dd70a46f504db721a42533516114d8c9e1dce9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:19:56.866644Z","signature_b64":"oQZIGSfWU08+RP7NRNAc1CBImDR38fhZEU+ogmCl8ATIY8O8BoG+AZYQ3addTe4DlhXZyl8GJonH7LuM3cYKDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e715fbbd060058b67ba7da3aea0becf886b12149722f3f35990ddd5d3e1d7915","last_reissued_at":"2026-07-04T14:19:56.865859Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:19:56.865859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Variational cluster approach to correlated electron systems in low dimensions","license":"","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"C. Dahnken, M. Aichhorn, M. Potthoff","submitted_at":"2003-03-07T15:40:02Z","abstract_excerpt":"A self-energy-functional approach is applied to construct cluster approximations for correlated lattice models. It turns out that the cluster-perturbation theory (Senechal et al, PRL 84, 522 (2000)) and the cellular dynamical mean-field theory (Kotliar et al, PRL 87, 186401 (2001)) are limiting cases of a more general cluster method. Results for the one-dimensional Hubbard model are discussed with regard to boundary conditions, bath degrees of freedom and cluster size."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0303136","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0303136/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"cond-mat/0303136","created_at":"2026-07-04T14:19:56.866259+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0303136v3","created_at":"2026-07-04T14:19:56.866259+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0303136","created_at":"2026-07-04T14:19:56.866259+00:00"},{"alias_kind":"pith_short_12","alias_value":"44K7XPIGABML","created_at":"2026-07-04T14:19:56.866259+00:00"},{"alias_kind":"pith_short_16","alias_value":"44K7XPIGABMLM65H","created_at":"2026-07-04T14:19:56.866259+00:00"},{"alias_kind":"pith_short_8","alias_value":"44K7XPIG","created_at":"2026-07-04T14:19:56.866259+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/44K7XPIGABMLM65H3I5OUC7M7C","json":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C.json","graph_json":"https://pith.science/api/pith-number/44K7XPIGABMLM65H3I5OUC7M7C/graph.json","events_json":"https://pith.science/api/pith-number/44K7XPIGABMLM65H3I5OUC7M7C/events.json","paper":"https://pith.science/paper/44K7XPIG"},"agent_actions":{"view_html":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C","download_json":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C.json","view_paper":"https://pith.science/paper/44K7XPIG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0303136&json=true","fetch_graph":"https://pith.science/api/pith-number/44K7XPIGABMLM65H3I5OUC7M7C/graph.json","fetch_events":"https://pith.science/api/pith-number/44K7XPIGABMLM65H3I5OUC7M7C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C/action/storage_attestation","attest_author":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C/action/author_attestation","sign_citation":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C/action/citation_signature","submit_replication":"https://pith.science/pith/44K7XPIGABMLM65H3I5OUC7M7C/action/replication_record"}},"created_at":"2026-07-04T14:19:56.866259+00:00","updated_at":"2026-07-04T14:19:56.866259+00:00"}