{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:GHDO5I3OLOOV2OHOR5R63LEL7P","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":"3ab72b7ce3446f3f0fc29db174f0406b974f0ed77046c225858a605fc0d8270f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-09-15T14:26:19Z","title_canon_sha256":"a6e76c462b6fe2249544211067d8128ac5f2426a09ec0d3e3c2f24af28736a19"},"schema_version":"1.0","source":{"id":"0809.2533","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.2533","created_at":"2026-05-18T02:15:34Z"},{"alias_kind":"arxiv_version","alias_value":"0809.2533v1","created_at":"2026-05-18T02:15:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.2533","created_at":"2026-05-18T02:15:34Z"},{"alias_kind":"pith_short_12","alias_value":"GHDO5I3OLOOV","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"GHDO5I3OLOOV2OHO","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"GHDO5I3O","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:5ad70b179f906f351d1225f75a95bc20ee19631d38027b092992f160bec50c99","target":"graph","created_at":"2026-05-18T02:15:34Z","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 use a partially Gutzwiller projected BCS d-wave wavefunction with an antiferromagentic weighting factor to study the ground state phase diagram of a half filled Hubbard-Heisenberg model in a square lattice with nearest neighbor hopping $t$ and a diagonal hopping $t'$. The calculations are carried out by using variational Monte Carlo method which treats the Gutzwiller projection explicitly. At large on-site Coulomb interaction $U$, the ground state is antiferromagnetic. As $U$ decreases, the ground state becomes superconducting and eventually metallic. The phase diagram is obtained by extens","authors_text":"Fu-Chun Zhang, Qiang-Hua Wang, Siegfried Guertler","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-09-15T14:26:19Z","title":"Variational Monte-Carlo studies of Gossamer Superconductivity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.2533","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":"sha256:956d40f0301f54b236ba4b5789b0ad6fbb7da2a1bb99247a84ceae6de1a8e37a","target":"record","created_at":"2026-05-18T02:15:34Z","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":"3ab72b7ce3446f3f0fc29db174f0406b974f0ed77046c225858a605fc0d8270f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-09-15T14:26:19Z","title_canon_sha256":"a6e76c462b6fe2249544211067d8128ac5f2426a09ec0d3e3c2f24af28736a19"},"schema_version":"1.0","source":{"id":"0809.2533","kind":"arxiv","version":1}},"canonical_sha256":"31c6eea36e5b9d5d38ee8f63edac8bfbd490a114e2da6b5f96cc18fd80f97357","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31c6eea36e5b9d5d38ee8f63edac8bfbd490a114e2da6b5f96cc18fd80f97357","first_computed_at":"2026-05-18T02:15:34.594762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:34.594762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bWCpPSygxsLRV5D+PcGvgY6ffTUH+xI4KN50JNgHva3c/E0lIeG1RB0O20n7bS0A+IxnQjeGIDrWMV2mk7a0Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:34.595353Z","signed_message":"canonical_sha256_bytes"},"source_id":"0809.2533","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:956d40f0301f54b236ba4b5789b0ad6fbb7da2a1bb99247a84ceae6de1a8e37a","sha256:5ad70b179f906f351d1225f75a95bc20ee19631d38027b092992f160bec50c99"],"state_sha256":"fb0b91baf7f75cfacd50c7f59500f785cfc6870943f5021905558f3950869828"}