{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:RRPZA5SOJ6HGGIMPGZJACXDLNQ","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":"17dec88d3fa9efc58ca11ae35a1adff828d3296dc554be4e2d1a7c1f013528e0","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1999-02-20T21:10:13Z","title_canon_sha256":"b3bca83e28d77aecfb921d9ed6864602b1267fa017dcb2d866b5cc1a59ae199e"},"schema_version":"1.0","source":{"id":"cond-mat/9902287","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9902287","created_at":"2026-07-04T16:12:18Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9902287v1","created_at":"2026-07-04T16:12:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9902287","created_at":"2026-07-04T16:12:18Z"},{"alias_kind":"pith_short_12","alias_value":"RRPZA5SOJ6HG","created_at":"2026-07-04T16:12:18Z"},{"alias_kind":"pith_short_16","alias_value":"RRPZA5SOJ6HGGIMP","created_at":"2026-07-04T16:12:18Z"},{"alias_kind":"pith_short_8","alias_value":"RRPZA5SO","created_at":"2026-07-04T16:12:18Z"}],"graph_snapshots":[{"event_id":"sha256:51527be8452731e3ffcb363b151418c89f504fc07c48c7825f0d92e55b3ef495","target":"graph","created_at":"2026-07-04T16:12:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/9902287/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This work is motivated by a specific point of view: at short distances and high energies the undoped and underdoped cuprates resemble the $\\pi$-flux phase of the t-J model. The purpose of this paper is to present a mechanism by which pairing grows out of the doped $\\pi$-flux phase. According to this mechanism pairing symmetry is determined by a parameter controlling the quantum tunneling of gauge flux quanta. For zero tunneling the symmetry is $d_{x^2-y^2}+id_{xy}$, while for large tunneling it is $d_{x^2-y^2}$. A zero-temperature critical point separates these two limits.","authors_text":"Dung-Hai Lee","cross_cats":["cond-mat.supr-con"],"headline":"","license":"","primary_cat":"cond-mat.str-el","submitted_at":"1999-02-20T21:10:13Z","title":"Pairing via Index theorem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9902287","kind":"arxiv","version":1},"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:acf1c1ee3422671b1f265091ea651324894a980abe8cd40c8b052014486798b7","target":"record","created_at":"2026-07-04T16:12:18Z","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":"17dec88d3fa9efc58ca11ae35a1adff828d3296dc554be4e2d1a7c1f013528e0","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1999-02-20T21:10:13Z","title_canon_sha256":"b3bca83e28d77aecfb921d9ed6864602b1267fa017dcb2d866b5cc1a59ae199e"},"schema_version":"1.0","source":{"id":"cond-mat/9902287","kind":"arxiv","version":1}},"canonical_sha256":"8c5f90764e4f8e63218f3652015c6b6c103cb108c2f21daaf7d63cd5de1a8b05","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c5f90764e4f8e63218f3652015c6b6c103cb108c2f21daaf7d63cd5de1a8b05","first_computed_at":"2026-07-04T16:12:18.346889Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:12:18.346889Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r0ZbZQ85FspCuK7WgJfLHkpPh+BTHxBWnx9603kdtOSExu4xkmKe7ZV7OTaabJWCu12/zo7/8Pi97ctOM9QLAA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:12:18.347261Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9902287","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:acf1c1ee3422671b1f265091ea651324894a980abe8cd40c8b052014486798b7","sha256:51527be8452731e3ffcb363b151418c89f504fc07c48c7825f0d92e55b3ef495"],"state_sha256":"4b5a99f74977a18396cd2a8d29993ec707a3696ecc4a0f58f8a585a70df7ac9e"}