{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1997:FADDNKKPJFY5GCZJXBVZFH5DJZ","short_pith_number":"pith:FADDNKKP","schema_version":"1.0","canonical_sha256":"280636a94f4971d30b29b86b929fa34e570b56aadf79d616618a222e281d5d9e","source":{"kind":"arxiv","id":"cond-mat/9709080","version":1},"attestation_state":"computed","paper":{"title":"Metal-Insulator Transition in the Two-Dimensional Hubbard Model at Half-Filling with Lifetime Effects within the Moment Approach","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat","authors_text":"J.J. Rodr\\'iguez-N\\'u\\~nez, S. Schafroth","submitted_at":"1997-09-05T14:36:02Z","abstract_excerpt":"We explore the effect of the imaginary part of the self-energy, $Im\\Sigma(\\vec{k},\\omega)$, having a single pole, $\\Omega(\\vec{k},\\omega)$, with spectral weight, $\\alpha(\\vec{k})$, and quasi-particle lifetime, $\\Gamma(\\vec{k})$, on the density of states. We solve the set of parameters, $\\Omega(\\vec{k},\\omega$), $\\alpha(\\vec{k})$, and $\\Gamma(\\vec{k})$ by means of the moment approach (exact sum rules) of Nolting. Our choice for $\\Sigma(k,\\omega)$, satisfies the Kramers - Kronig relationship automatically. Due to our choice of the self - energy, the system is not a Fermi liquid for any value of "},"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/9709080","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat","submitted_at":"1997-09-05T14:36:02Z","cross_cats_sorted":[],"title_canon_sha256":"6e495f3f198db7387192f4830304bbab30abdc2bcfaee34668c12171d30ca8f1","abstract_canon_sha256":"47752cc902a16e9e48fbc28a804f6b6d409e6f23fd625ece752c74921c7782a7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:20.162905Z","signature_b64":"7U6ljNfZWD5nKDStxALVsg464fjUBOgMj3t3mz3dYDVcUpDJT38WT/zNr/PSsF9FO9t78x+egtA9U/QMRyIjDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"280636a94f4971d30b29b86b929fa34e570b56aadf79d616618a222e281d5d9e","last_reissued_at":"2026-05-18T01:09:20.162435Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:20.162435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Metal-Insulator Transition in the Two-Dimensional Hubbard Model at Half-Filling with Lifetime Effects within the Moment Approach","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat","authors_text":"J.J. Rodr\\'iguez-N\\'u\\~nez, S. Schafroth","submitted_at":"1997-09-05T14:36:02Z","abstract_excerpt":"We explore the effect of the imaginary part of the self-energy, $Im\\Sigma(\\vec{k},\\omega)$, having a single pole, $\\Omega(\\vec{k},\\omega)$, with spectral weight, $\\alpha(\\vec{k})$, and quasi-particle lifetime, $\\Gamma(\\vec{k})$, on the density of states. We solve the set of parameters, $\\Omega(\\vec{k},\\omega$), $\\alpha(\\vec{k})$, and $\\Gamma(\\vec{k})$ by means of the moment approach (exact sum rules) of Nolting. Our choice for $\\Sigma(k,\\omega)$, satisfies the Kramers - Kronig relationship automatically. Due to our choice of the self - energy, the system is not a Fermi liquid for any value of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9709080","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/9709080","created_at":"2026-05-18T01:09:20.162505+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9709080v1","created_at":"2026-05-18T01:09:20.162505+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9709080","created_at":"2026-05-18T01:09:20.162505+00:00"},{"alias_kind":"pith_short_12","alias_value":"FADDNKKPJFY5","created_at":"2026-05-18T12:25:48.327863+00:00"},{"alias_kind":"pith_short_16","alias_value":"FADDNKKPJFY5GCZJ","created_at":"2026-05-18T12:25:48.327863+00:00"},{"alias_kind":"pith_short_8","alias_value":"FADDNKKP","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/FADDNKKPJFY5GCZJXBVZFH5DJZ","json":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ.json","graph_json":"https://pith.science/api/pith-number/FADDNKKPJFY5GCZJXBVZFH5DJZ/graph.json","events_json":"https://pith.science/api/pith-number/FADDNKKPJFY5GCZJXBVZFH5DJZ/events.json","paper":"https://pith.science/paper/FADDNKKP"},"agent_actions":{"view_html":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ","download_json":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ.json","view_paper":"https://pith.science/paper/FADDNKKP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/9709080&json=true","fetch_graph":"https://pith.science/api/pith-number/FADDNKKPJFY5GCZJXBVZFH5DJZ/graph.json","fetch_events":"https://pith.science/api/pith-number/FADDNKKPJFY5GCZJXBVZFH5DJZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ/action/storage_attestation","attest_author":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ/action/author_attestation","sign_citation":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ/action/citation_signature","submit_replication":"https://pith.science/pith/FADDNKKPJFY5GCZJXBVZFH5DJZ/action/replication_record"}},"created_at":"2026-05-18T01:09:20.162505+00:00","updated_at":"2026-05-18T01:09:20.162505+00:00"}