{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:GTDE73ROX2PICL7QR5C6MC72C6","short_pith_number":"pith:GTDE73RO","schema_version":"1.0","canonical_sha256":"34c64fee2ebe9e812ff08f45e60bfa17a2f86fdf7ee601d3187fb31a73942e29","source":{"kind":"arxiv","id":"cond-mat/0702391","version":2},"attestation_state":"computed","paper":{"title":"The superconducting gap in the Hubbard model and the two gap energy scales in high-Tc cuprates","license":"","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"E. Arrigoni, M. Aichhorn, W. Hanke, Z. B. Huang","submitted_at":"2007-02-16T12:52:57Z","abstract_excerpt":"Recent excperiments (ARPES, Raman) suggest the presence of two distinct energy gaps in high-Tc superconductors (HTSC), exhibiting different doping dependences. Results of a variational cluster approach to the superconducting state of the two-dimensional Hubbard model are presented which show that this model qualitatively describes this gap dichotomy: One gap (antinodal) increases with less doping, a behavior long considered as reflecting the general gap behavior of the HTSC. On the other hand, the near-nodal gap does even slightly decrease with underdoping. An explanation of this unexpected be"},"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/0702391","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2007-02-16T12:52:57Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"fd5be98ff656fad5a711851869673c199078fb93124fda05c03c0d80053ab89f","abstract_canon_sha256":"38d946f7a2294ad2539aeb0f61feebcc11b68fe32bb342a73dcac393e5acd076"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:06:21.996756Z","signature_b64":"kkMfBaBHl9jx3V07Rlg3TzQn/1Me+2oBf578pmFUVpxCbNLEHrAbLHRcPvD5OgtAZdwI5JWDWBjQ9qovxSC5Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34c64fee2ebe9e812ff08f45e60bfa17a2f86fdf7ee601d3187fb31a73942e29","last_reissued_at":"2026-07-04T15:06:21.996334Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:06:21.996334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The superconducting gap in the Hubbard model and the two gap energy scales in high-Tc cuprates","license":"","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"E. Arrigoni, M. Aichhorn, W. Hanke, Z. B. Huang","submitted_at":"2007-02-16T12:52:57Z","abstract_excerpt":"Recent excperiments (ARPES, Raman) suggest the presence of two distinct energy gaps in high-Tc superconductors (HTSC), exhibiting different doping dependences. Results of a variational cluster approach to the superconducting state of the two-dimensional Hubbard model are presented which show that this model qualitatively describes this gap dichotomy: One gap (antinodal) increases with less doping, a behavior long considered as reflecting the general gap behavior of the HTSC. On the other hand, the near-nodal gap does even slightly decrease with underdoping. An explanation of this unexpected be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0702391","kind":"arxiv","version":2},"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/0702391/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/0702391","created_at":"2026-07-04T15:06:21.996400+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0702391v2","created_at":"2026-07-04T15:06:21.996400+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0702391","created_at":"2026-07-04T15:06:21.996400+00:00"},{"alias_kind":"pith_short_12","alias_value":"GTDE73ROX2PI","created_at":"2026-07-04T15:06:21.996400+00:00"},{"alias_kind":"pith_short_16","alias_value":"GTDE73ROX2PICL7Q","created_at":"2026-07-04T15:06:21.996400+00:00"},{"alias_kind":"pith_short_8","alias_value":"GTDE73RO","created_at":"2026-07-04T15:06:21.996400+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/GTDE73ROX2PICL7QR5C6MC72C6","json":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6.json","graph_json":"https://pith.science/api/pith-number/GTDE73ROX2PICL7QR5C6MC72C6/graph.json","events_json":"https://pith.science/api/pith-number/GTDE73ROX2PICL7QR5C6MC72C6/events.json","paper":"https://pith.science/paper/GTDE73RO"},"agent_actions":{"view_html":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6","download_json":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6.json","view_paper":"https://pith.science/paper/GTDE73RO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0702391&json=true","fetch_graph":"https://pith.science/api/pith-number/GTDE73ROX2PICL7QR5C6MC72C6/graph.json","fetch_events":"https://pith.science/api/pith-number/GTDE73ROX2PICL7QR5C6MC72C6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6/action/storage_attestation","attest_author":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6/action/author_attestation","sign_citation":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6/action/citation_signature","submit_replication":"https://pith.science/pith/GTDE73ROX2PICL7QR5C6MC72C6/action/replication_record"}},"created_at":"2026-07-04T15:06:21.996400+00:00","updated_at":"2026-07-04T15:06:21.996400+00:00"}