{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1995:ZAGJAHAX3OZA34ENNTQQA2CTQB","short_pith_number":"pith:ZAGJAHAX","schema_version":"1.0","canonical_sha256":"c80c901c17dbb20df08d6ce1006853805f9a77b7db77a09e50e0ec9450eb837e","source":{"kind":"arxiv","id":"cond-mat/9511034","version":2},"attestation_state":"computed","paper":{"title":"Plaquette Resonating-Valence-Bond Ground State of CaV$_4$O$_9$","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat","authors_text":"Hiroshi Kontani, Kazuo Ueda, Manfred Sigrist, Patrick A. Lee","submitted_at":"1995-11-07T10:08:51Z","abstract_excerpt":"A theoretical model is presented to explain the spin gap observed for CaV$_4$O$_9$. The underlying lattice of the 1/5-depleted square lattice favors a formation of plaquette resonating valence bond state. Inclusion of the frustrating second neighbor interaction enhances this tendency, leading to a quantum disordered state of a two dimensional spin-1/2 Heisenberg model with a sufficiently big spin gap compatible with experiments."},"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/9511034","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat","submitted_at":"1995-11-07T10:08:51Z","cross_cats_sorted":[],"title_canon_sha256":"f357d1296cb3ebe55abfb935979c4474500b544ebb7ffc640cdbd08678ef2eda","abstract_canon_sha256":"5bb6a38a2f1ba552e6b7de659aeaad8e8d00236ec9fe28ad0f93c11e8952d446"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:58:43.654119Z","signature_b64":"uI8eul08FmeQdwHyViKpqEXOuob08SBsYm0Urb86b48pRKSNzIuCaA9+q+0YbzsGPuN8uKw/pJjZVHy9t5NXBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c80c901c17dbb20df08d6ce1006853805f9a77b7db77a09e50e0ec9450eb837e","last_reissued_at":"2026-07-04T15:58:43.653756Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:58:43.653756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Plaquette Resonating-Valence-Bond Ground State of CaV$_4$O$_9$","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat","authors_text":"Hiroshi Kontani, Kazuo Ueda, Manfred Sigrist, Patrick A. Lee","submitted_at":"1995-11-07T10:08:51Z","abstract_excerpt":"A theoretical model is presented to explain the spin gap observed for CaV$_4$O$_9$. The underlying lattice of the 1/5-depleted square lattice favors a formation of plaquette resonating valence bond state. Inclusion of the frustrating second neighbor interaction enhances this tendency, leading to a quantum disordered state of a two dimensional spin-1/2 Heisenberg model with a sufficiently big spin gap compatible with experiments."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9511034","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/9511034/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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/9511034","created_at":"2026-07-04T15:58:43.653818+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9511034v2","created_at":"2026-07-04T15:58:43.653818+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9511034","created_at":"2026-07-04T15:58:43.653818+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZAGJAHAX3OZA","created_at":"2026-07-04T15:58:43.653818+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZAGJAHAX3OZA34EN","created_at":"2026-07-04T15:58:43.653818+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZAGJAHAX","created_at":"2026-07-04T15:58:43.653818+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/ZAGJAHAX3OZA34ENNTQQA2CTQB","json":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB.json","graph_json":"https://pith.science/api/pith-number/ZAGJAHAX3OZA34ENNTQQA2CTQB/graph.json","events_json":"https://pith.science/api/pith-number/ZAGJAHAX3OZA34ENNTQQA2CTQB/events.json","paper":"https://pith.science/paper/ZAGJAHAX"},"agent_actions":{"view_html":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB","download_json":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB.json","view_paper":"https://pith.science/paper/ZAGJAHAX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/9511034&json=true","fetch_graph":"https://pith.science/api/pith-number/ZAGJAHAX3OZA34ENNTQQA2CTQB/graph.json","fetch_events":"https://pith.science/api/pith-number/ZAGJAHAX3OZA34ENNTQQA2CTQB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB/action/storage_attestation","attest_author":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB/action/author_attestation","sign_citation":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB/action/citation_signature","submit_replication":"https://pith.science/pith/ZAGJAHAX3OZA34ENNTQQA2CTQB/action/replication_record"}},"created_at":"2026-07-04T15:58:43.653818+00:00","updated_at":"2026-07-04T15:58:43.653818+00:00"}