{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:YWUFBL7CPSZFMNXFWNJPZEAIZM","short_pith_number":"pith:YWUFBL7C","schema_version":"1.0","canonical_sha256":"c5a850afe27cb25636e5b352fc9008cb2c00ddb9f9f3bd5128ed5b7eef46efca","source":{"kind":"arxiv","id":"1511.02616","version":1},"attestation_state":"computed","paper":{"title":"Charge instabilities of the two-dimensional Hubbard model with attractive nearest neighbour interaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Kevin Steffen, Raymond Fresard, Thilo Kopp","submitted_at":"2015-11-09T09:59:13Z","abstract_excerpt":"Attractive non-local interactions jointly with repulsive local interaction in a microscopic modelling of electronic Fermi liquids generate a competition between an enhancement of the static charge susceptibility---ultimately signalling charge instability and phase separation---and its correlation induced suppression. We analyse this scenario through the investigation of the extended Hubbard model on a two-dimensional square lattice, using the spin rotation invariant slave-boson representation of Kotliar and Ruckenstein. The quasiparticle density of states, the renormalised effective mass and t"},"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":"1511.02616","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-11-09T09:59:13Z","cross_cats_sorted":[],"title_canon_sha256":"db9dcaddf1f49ce304b9dc96892e3ea2ffc724ec941c06dbaa9ece9a0d940b8a","abstract_canon_sha256":"0b467ab2257850df52ec7b1cd9efb6fed226c5f8469b45e053e53b121b5b3982"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:25.545675Z","signature_b64":"sMUYjTaSSsd8+wna9bjTjYJkPixMPMxw4RfS134elNMe1ZuD5iTzhlW2FsQxULTfXXaZIdfchMm7vpvI2xPbAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5a850afe27cb25636e5b352fc9008cb2c00ddb9f9f3bd5128ed5b7eef46efca","last_reissued_at":"2026-05-18T00:55:25.545017Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:25.545017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Charge instabilities of the two-dimensional Hubbard model with attractive nearest neighbour interaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Kevin Steffen, Raymond Fresard, Thilo Kopp","submitted_at":"2015-11-09T09:59:13Z","abstract_excerpt":"Attractive non-local interactions jointly with repulsive local interaction in a microscopic modelling of electronic Fermi liquids generate a competition between an enhancement of the static charge susceptibility---ultimately signalling charge instability and phase separation---and its correlation induced suppression. We analyse this scenario through the investigation of the extended Hubbard model on a two-dimensional square lattice, using the spin rotation invariant slave-boson representation of Kotliar and Ruckenstein. The quasiparticle density of states, the renormalised effective mass and t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.02616","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":"1511.02616","created_at":"2026-05-18T00:55:25.545123+00:00"},{"alias_kind":"arxiv_version","alias_value":"1511.02616v1","created_at":"2026-05-18T00:55:25.545123+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.02616","created_at":"2026-05-18T00:55:25.545123+00:00"},{"alias_kind":"pith_short_12","alias_value":"YWUFBL7CPSZF","created_at":"2026-05-18T12:29:52.810259+00:00"},{"alias_kind":"pith_short_16","alias_value":"YWUFBL7CPSZFMNXF","created_at":"2026-05-18T12:29:52.810259+00:00"},{"alias_kind":"pith_short_8","alias_value":"YWUFBL7C","created_at":"2026-05-18T12:29:52.810259+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/YWUFBL7CPSZFMNXFWNJPZEAIZM","json":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM.json","graph_json":"https://pith.science/api/pith-number/YWUFBL7CPSZFMNXFWNJPZEAIZM/graph.json","events_json":"https://pith.science/api/pith-number/YWUFBL7CPSZFMNXFWNJPZEAIZM/events.json","paper":"https://pith.science/paper/YWUFBL7C"},"agent_actions":{"view_html":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM","download_json":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM.json","view_paper":"https://pith.science/paper/YWUFBL7C","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1511.02616&json=true","fetch_graph":"https://pith.science/api/pith-number/YWUFBL7CPSZFMNXFWNJPZEAIZM/graph.json","fetch_events":"https://pith.science/api/pith-number/YWUFBL7CPSZFMNXFWNJPZEAIZM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM/action/storage_attestation","attest_author":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM/action/author_attestation","sign_citation":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM/action/citation_signature","submit_replication":"https://pith.science/pith/YWUFBL7CPSZFMNXFWNJPZEAIZM/action/replication_record"}},"created_at":"2026-05-18T00:55:25.545123+00:00","updated_at":"2026-05-18T00:55:25.545123+00:00"}