{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EMEMKYENLM5V5JZUZPTDNA7CB4","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1ca0268c19bbf75476d3a94947ce4ff992e449e7ebce667d0f54a27a79175b44","cross_cats_sorted":["cond-mat.quant-gas","cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-09-25T16:31:46Z","title_canon_sha256":"b1ef7ba076e487c9689880d0868dd3a1853a765f50ba4b192f087764c7dd85df"},"schema_version":"1.0","source":{"id":"1709.08576","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.08576","created_at":"2026-05-18T00:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"1709.08576v2","created_at":"2026-05-18T00:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.08576","created_at":"2026-05-18T00:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"EMEMKYENLM5V","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EMEMKYENLM5V5JZU","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EMEMKYEN","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:f98d7e38eb45af02a56a91e8eac572127be76216d6b23e317ce849fe54450d6d","target":"graph","created_at":"2026-05-18T00:04:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We analyze a family of two-dimensional BCS Hamiltonians with general l-wave pairing interactions, classifying the models in this family that are Bethe-ansatz solvable in the finite-size regime. We show that these solutions are characterized by nontrivial winding numbers, associated with topological phases, in some part of the corresponding phase diagrams. By means of a comparative study, we demonstrate benefits and limitations of the mean-field approximation, which is the standard approach in the limit of a large number of particles. The mean-field analysis also allows to extend part of the re","authors_text":"Luca Lepori, Marco Roncaglia","cross_cats":["cond-mat.quant-gas","cond-mat.supr-con","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-09-25T16:31:46Z","title":"Solvable 2D superconductors with l-wave pairing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.08576","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:c9ddfbb81b2dcd0087d2d4a4b931c8271496a1b746a461bd40e711c6ebcf37dc","target":"record","created_at":"2026-05-18T00:04:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1ca0268c19bbf75476d3a94947ce4ff992e449e7ebce667d0f54a27a79175b44","cross_cats_sorted":["cond-mat.quant-gas","cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-09-25T16:31:46Z","title_canon_sha256":"b1ef7ba076e487c9689880d0868dd3a1853a765f50ba4b192f087764c7dd85df"},"schema_version":"1.0","source":{"id":"1709.08576","kind":"arxiv","version":2}},"canonical_sha256":"2308c5608d5b3b5ea734cbe63683e20f1029ee1b80425e197747215b41d15e3a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2308c5608d5b3b5ea734cbe63683e20f1029ee1b80425e197747215b41d15e3a","first_computed_at":"2026-05-18T00:04:13.576403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:13.576403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BYYOV15tg41zL4jxEX05V/odnTJhYAXYVFjs9oex4DnYW2AWdmFf9gQ/xeE3sX2MW9cTLk3p9HYMLrdT6UapBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:13.577121Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.08576","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9ddfbb81b2dcd0087d2d4a4b931c8271496a1b746a461bd40e711c6ebcf37dc","sha256:f98d7e38eb45af02a56a91e8eac572127be76216d6b23e317ce849fe54450d6d"],"state_sha256":"a1ec4c89cbaf128e64fa82d6d72eea5cda811e9640a6468779595faa242c8006"}