{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:JHBE6WTL6OOXTOJT74XDUOI5DF","short_pith_number":"pith:JHBE6WTL","canonical_record":{"source":{"id":"2504.10114","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-04-14T11:25:29Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"8eebe564e3989085852a0ed48941bd211b669c512ed09a1239e0f670676eb94b","abstract_canon_sha256":"10c98bbe76e0ee945e9e1e371ba0ce27641efe050c6a4e211f4c0f6533fe5137"},"schema_version":"1.0"},"canonical_sha256":"49c24f5a6bf39d79b933ff2e3a391d195bf36b4e7de519b97a1052292af7de25","source":{"kind":"arxiv","id":"2504.10114","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.10114","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"arxiv_version","alias_value":"2504.10114v3","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.10114","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"pith_short_12","alias_value":"JHBE6WTL6OOX","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"pith_short_16","alias_value":"JHBE6WTL6OOXTOJT","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"pith_short_8","alias_value":"JHBE6WTL","created_at":"2026-07-05T11:56:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:JHBE6WTL6OOXTOJT74XDUOI5DF","target":"record","payload":{"canonical_record":{"source":{"id":"2504.10114","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-04-14T11:25:29Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"8eebe564e3989085852a0ed48941bd211b669c512ed09a1239e0f670676eb94b","abstract_canon_sha256":"10c98bbe76e0ee945e9e1e371ba0ce27641efe050c6a4e211f4c0f6533fe5137"},"schema_version":"1.0"},"canonical_sha256":"49c24f5a6bf39d79b933ff2e3a391d195bf36b4e7de519b97a1052292af7de25","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:56:56.024208Z","signature_b64":"FKxSB2uhBqt10VrnrLXdlA8PO7V2YQQt85VZcrKpS/AN4IDnfjyy8etCQzD/fqf/EDxdcnuBaQyVZHQkPGjKDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"49c24f5a6bf39d79b933ff2e3a391d195bf36b4e7de519b97a1052292af7de25","last_reissued_at":"2026-07-05T11:56:56.023736Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:56:56.023736Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.10114","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:56:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WOF8+wznX6pPSI1vzF+/p173ceB16Yb+lTB+p6+wxXHWYs7V8OClxBe91ApApCTTu8U3FAa5HS6d9Bc1oqnfAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T15:21:07.866835Z"},"content_sha256":"cc86f651ff42c2628e46304ff059f8130029a8b9d5d1f425926f9bfc52c36874","schema_version":"1.0","event_id":"sha256:cc86f651ff42c2628e46304ff059f8130029a8b9d5d1f425926f9bfc52c36874"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:JHBE6WTL6OOXTOJT74XDUOI5DF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"$t$-$J$ model for strongly correlated two-orbital systems: Application to bilayer nickelate superconductors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"Kazuhiko Kuroki, Masataka Kakoi, Tatsuya Kaneko","submitted_at":"2025-04-14T11:25:29Z","abstract_excerpt":"We derive a $t$-$J$ model applicable to strongly correlated two-orbital systems including bilayer nickelate superconductors. Using the Schrieffer-Wolff transformation, we exclude the doubly occupied states, which raise the onsite Coulomb energy, and derive the resulting spin interactions from the two-orbital Hubbard model. We also introduce effective interactions attributed to the interorbital Coulomb interaction. To adapt the effective model to bilayer nickelates that exhibit high-temperature superconductivity, we quantitatively evaluate the strengths of the spin interactions based on the hop"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.10114","kind":"arxiv","version":3},"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/2504.10114/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:56:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3rWe1kHe6peEfcxo2kNSW54xbToDsIcsccqFH7IHJRHNh9GxaJ89T8A3l3BkdMVAJVLPnZ273MTTjA00+gMuDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T15:21:07.867364Z"},"content_sha256":"afb3ee4b647a1a2ebe24db9ca5e030475302dfbb996d65c6f2acb763a578d836","schema_version":"1.0","event_id":"sha256:afb3ee4b647a1a2ebe24db9ca5e030475302dfbb996d65c6f2acb763a578d836"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JHBE6WTL6OOXTOJT74XDUOI5DF/bundle.json","state_url":"https://pith.science/pith/JHBE6WTL6OOXTOJT74XDUOI5DF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JHBE6WTL6OOXTOJT74XDUOI5DF/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-19T15:21:07Z","links":{"resolver":"https://pith.science/pith/JHBE6WTL6OOXTOJT74XDUOI5DF","bundle":"https://pith.science/pith/JHBE6WTL6OOXTOJT74XDUOI5DF/bundle.json","state":"https://pith.science/pith/JHBE6WTL6OOXTOJT74XDUOI5DF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JHBE6WTL6OOXTOJT74XDUOI5DF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JHBE6WTL6OOXTOJT74XDUOI5DF","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":"10c98bbe76e0ee945e9e1e371ba0ce27641efe050c6a4e211f4c0f6533fe5137","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-04-14T11:25:29Z","title_canon_sha256":"8eebe564e3989085852a0ed48941bd211b669c512ed09a1239e0f670676eb94b"},"schema_version":"1.0","source":{"id":"2504.10114","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.10114","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"arxiv_version","alias_value":"2504.10114v3","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.10114","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"pith_short_12","alias_value":"JHBE6WTL6OOX","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"pith_short_16","alias_value":"JHBE6WTL6OOXTOJT","created_at":"2026-07-05T11:56:56Z"},{"alias_kind":"pith_short_8","alias_value":"JHBE6WTL","created_at":"2026-07-05T11:56:56Z"}],"graph_snapshots":[{"event_id":"sha256:afb3ee4b647a1a2ebe24db9ca5e030475302dfbb996d65c6f2acb763a578d836","target":"graph","created_at":"2026-07-05T11:56:56Z","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/2504.10114/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We derive a $t$-$J$ model applicable to strongly correlated two-orbital systems including bilayer nickelate superconductors. Using the Schrieffer-Wolff transformation, we exclude the doubly occupied states, which raise the onsite Coulomb energy, and derive the resulting spin interactions from the two-orbital Hubbard model. We also introduce effective interactions attributed to the interorbital Coulomb interaction. To adapt the effective model to bilayer nickelates that exhibit high-temperature superconductivity, we quantitatively evaluate the strengths of the spin interactions based on the hop","authors_text":"Kazuhiko Kuroki, Masataka Kakoi, Tatsuya Kaneko","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-04-14T11:25:29Z","title":"$t$-$J$ model for strongly correlated two-orbital systems: Application to bilayer nickelate superconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.10114","kind":"arxiv","version":3},"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:cc86f651ff42c2628e46304ff059f8130029a8b9d5d1f425926f9bfc52c36874","target":"record","created_at":"2026-07-05T11:56:56Z","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":"10c98bbe76e0ee945e9e1e371ba0ce27641efe050c6a4e211f4c0f6533fe5137","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-04-14T11:25:29Z","title_canon_sha256":"8eebe564e3989085852a0ed48941bd211b669c512ed09a1239e0f670676eb94b"},"schema_version":"1.0","source":{"id":"2504.10114","kind":"arxiv","version":3}},"canonical_sha256":"49c24f5a6bf39d79b933ff2e3a391d195bf36b4e7de519b97a1052292af7de25","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"49c24f5a6bf39d79b933ff2e3a391d195bf36b4e7de519b97a1052292af7de25","first_computed_at":"2026-07-05T11:56:56.023736Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:56:56.023736Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FKxSB2uhBqt10VrnrLXdlA8PO7V2YQQt85VZcrKpS/AN4IDnfjyy8etCQzD/fqf/EDxdcnuBaQyVZHQkPGjKDA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:56:56.024208Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.10114","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc86f651ff42c2628e46304ff059f8130029a8b9d5d1f425926f9bfc52c36874","sha256:afb3ee4b647a1a2ebe24db9ca5e030475302dfbb996d65c6f2acb763a578d836"],"state_sha256":"2bb09ceb7783eec5720c9705ac12c55149dc167c56c65e777b747135f45caaaf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U7WWsiZXgedarfmEASOPEyadT7L5CvbQmNaYshBICljbmWf2q+VDbvrwKUwjX8oe5HjN66R8zpRPvGbxNPQpCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T15:21:07.871406Z","bundle_sha256":"5f0d08a12a4e138558a3134b25a163b11f3aa40744cede1e6ed91afda2e55268"}}