{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1998:QLS23FTTRSF37BXKUQX4XKKBX3","short_pith_number":"pith:QLS23FTT","schema_version":"1.0","canonical_sha256":"82e5ad96738c8bbf86eaa42fcba941bec5a0eb26f87a4221a312987229f8fd98","source":{"kind":"arxiv","id":"cond-mat/9806210","version":1},"attestation_state":"computed","paper":{"title":"Variational Monte Carlo Study on the Superconductivity in the Two-Dimensional Hubbard Model","license":"","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"1) ((1) Electrotechnical Laboratory, 2), (2) Institute of Materials Science, Japan, Japan), Kunihiko Yamaji (1, Soh Koike (2, Takashi Yanagisawa (1), Takeshi Nakanishi (1), Tsukuba, University of Tsukuba","submitted_at":"1998-06-18T05:43:52Z","abstract_excerpt":"The possibility of superconductivity (SC) in the 2D Hubbard model (2DH) was investigated by means of the variational Monte Carlo method. The energy gain of the d-wave SC state, obtained as the difference of the minimum energy with a finite gap and that with zero gap, was examined with respect to dependences on U, electron density rho and next nearest neighbor transfer t' mainly on the 10 x 10 lattice. It was found to be maximized around U = 8 (in energy unit of t). It sharply increased for negative values of t' and had a broad peak for t' ~ -0.10. For these values of t' the energy gain was a s"},"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/9806210","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"1998-06-18T05:43:52Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"d364bd8ba74282ebae3ba59cbead1d02edb865e571222d052020b3250d46badb","abstract_canon_sha256":"2534e4498781744cfb6ff46f34edc1de312f0ed841a6b542ac27739c26f8e20f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:30.342822Z","signature_b64":"4aDd9adGqmOYDOoATtzVvy/k5oxV4UUljtV33SVIcwR5EhQ4bnKlfm4gR8yFfWj+QNtXBjIMNLmUKpV80wH/Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82e5ad96738c8bbf86eaa42fcba941bec5a0eb26f87a4221a312987229f8fd98","last_reissued_at":"2026-05-18T01:39:30.342204Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:30.342204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Variational Monte Carlo Study on the Superconductivity in the Two-Dimensional Hubbard Model","license":"","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"1) ((1) Electrotechnical Laboratory, 2), (2) Institute of Materials Science, Japan, Japan), Kunihiko Yamaji (1, Soh Koike (2, Takashi Yanagisawa (1), Takeshi Nakanishi (1), Tsukuba, University of Tsukuba","submitted_at":"1998-06-18T05:43:52Z","abstract_excerpt":"The possibility of superconductivity (SC) in the 2D Hubbard model (2DH) was investigated by means of the variational Monte Carlo method. The energy gain of the d-wave SC state, obtained as the difference of the minimum energy with a finite gap and that with zero gap, was examined with respect to dependences on U, electron density rho and next nearest neighbor transfer t' mainly on the 10 x 10 lattice. It was found to be maximized around U = 8 (in energy unit of t). It sharply increased for negative values of t' and had a broad peak for t' ~ -0.10. For these values of t' the energy gain was a s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9806210","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/9806210","created_at":"2026-05-18T01:39:30.342296+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9806210v1","created_at":"2026-05-18T01:39:30.342296+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9806210","created_at":"2026-05-18T01:39:30.342296+00:00"},{"alias_kind":"pith_short_12","alias_value":"QLS23FTTRSF3","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_16","alias_value":"QLS23FTTRSF37BXK","created_at":"2026-05-18T12:25:49.038998+00:00"},{"alias_kind":"pith_short_8","alias_value":"QLS23FTT","created_at":"2026-05-18T12:25:49.038998+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2507.23748","citing_title":"Applying the Worldvolume Hybrid Monte Carlo method to the Hubbard model away from half filling","ref_index":22,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3","json":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3.json","graph_json":"https://pith.science/api/pith-number/QLS23FTTRSF37BXKUQX4XKKBX3/graph.json","events_json":"https://pith.science/api/pith-number/QLS23FTTRSF37BXKUQX4XKKBX3/events.json","paper":"https://pith.science/paper/QLS23FTT"},"agent_actions":{"view_html":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3","download_json":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3.json","view_paper":"https://pith.science/paper/QLS23FTT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/9806210&json=true","fetch_graph":"https://pith.science/api/pith-number/QLS23FTTRSF37BXKUQX4XKKBX3/graph.json","fetch_events":"https://pith.science/api/pith-number/QLS23FTTRSF37BXKUQX4XKKBX3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3/action/storage_attestation","attest_author":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3/action/author_attestation","sign_citation":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3/action/citation_signature","submit_replication":"https://pith.science/pith/QLS23FTTRSF37BXKUQX4XKKBX3/action/replication_record"}},"created_at":"2026-05-18T01:39:30.342296+00:00","updated_at":"2026-05-18T01:39:30.342296+00:00"}