{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1997:WWZOWTLFAGYTFJBEAZQ7HK6W7A","short_pith_number":"pith:WWZOWTLF","schema_version":"1.0","canonical_sha256":"b5b2eb4d6501b132a4240661f3abd6f83fd6a571cea170b3ca2a8f2374054087","source":{"kind":"arxiv","id":"cond-mat/9705305","version":1},"attestation_state":"computed","paper":{"title":"Ferromagnetism in the Hubbard model: Influence of the lattice structure","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"T. Herrmann, W. Nolting","submitted_at":"1997-05-30T09:13:01Z","abstract_excerpt":"By use of the spectral density approach the influence of the lattice structure on the possibility of ferromagnetism in the single band Hubbard model is investigated. The d=\\infty hypercubic lattice does not show magnetic phase transitions of second order irrespective of the strength of the Coulomb coupling. However, first order transitions to finite magnetic moments, not visible as singularities of the paramagnetic susceptibility, may appear in the very strong coupling regime. In d=3 second order transitions are found but only for very strong couplings, where the non-locality of the electronic"},"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/9705305","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1997-05-30T09:13:01Z","cross_cats_sorted":[],"title_canon_sha256":"0bd12539ac470e1c8528b01a7843552ebda9ebd688f7773629cd5c388ed0336f","abstract_canon_sha256":"c71cb082bcffafc55cb82590176dd125ea419d5c8aa8ac0dd323b381ac823f48"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:07:08.120214Z","signature_b64":"e6nudQPUAhvn23v+0yGNhoLj7C/ZS0uruoRpXOXNErr6TpKR60HMhTfPjGwHq7VeIc7ZGgO7jJQgihT7g3LLDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5b2eb4d6501b132a4240661f3abd6f83fd6a571cea170b3ca2a8f2374054087","last_reissued_at":"2026-05-18T01:07:08.119668Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:07:08.119668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Ferromagnetism in the Hubbard model: Influence of the lattice structure","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"T. Herrmann, W. Nolting","submitted_at":"1997-05-30T09:13:01Z","abstract_excerpt":"By use of the spectral density approach the influence of the lattice structure on the possibility of ferromagnetism in the single band Hubbard model is investigated. The d=\\infty hypercubic lattice does not show magnetic phase transitions of second order irrespective of the strength of the Coulomb coupling. However, first order transitions to finite magnetic moments, not visible as singularities of the paramagnetic susceptibility, may appear in the very strong coupling regime. In d=3 second order transitions are found but only for very strong couplings, where the non-locality of the electronic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9705305","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":"cond-mat/9705305","created_at":"2026-05-18T01:07:08.119746+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9705305v1","created_at":"2026-05-18T01:07:08.119746+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9705305","created_at":"2026-05-18T01:07:08.119746+00:00"},{"alias_kind":"pith_short_12","alias_value":"WWZOWTLFAGYT","created_at":"2026-05-18T12:25:48.327863+00:00"},{"alias_kind":"pith_short_16","alias_value":"WWZOWTLFAGYTFJBE","created_at":"2026-05-18T12:25:48.327863+00:00"},{"alias_kind":"pith_short_8","alias_value":"WWZOWTLF","created_at":"2026-05-18T12:25:48.327863+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/WWZOWTLFAGYTFJBEAZQ7HK6W7A","json":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A.json","graph_json":"https://pith.science/api/pith-number/WWZOWTLFAGYTFJBEAZQ7HK6W7A/graph.json","events_json":"https://pith.science/api/pith-number/WWZOWTLFAGYTFJBEAZQ7HK6W7A/events.json","paper":"https://pith.science/paper/WWZOWTLF"},"agent_actions":{"view_html":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A","download_json":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A.json","view_paper":"https://pith.science/paper/WWZOWTLF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/9705305&json=true","fetch_graph":"https://pith.science/api/pith-number/WWZOWTLFAGYTFJBEAZQ7HK6W7A/graph.json","fetch_events":"https://pith.science/api/pith-number/WWZOWTLFAGYTFJBEAZQ7HK6W7A/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A/action/storage_attestation","attest_author":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A/action/author_attestation","sign_citation":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A/action/citation_signature","submit_replication":"https://pith.science/pith/WWZOWTLFAGYTFJBEAZQ7HK6W7A/action/replication_record"}},"created_at":"2026-05-18T01:07:08.119746+00:00","updated_at":"2026-05-18T01:07:08.119746+00:00"}