{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:YVK3CRQQ754DHHCWPEQUHEC7UB","short_pith_number":"pith:YVK3CRQQ","canonical_record":{"source":{"id":"cond-mat/0408172","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2004-08-09T05:31:16Z","cross_cats_sorted":[],"title_canon_sha256":"98a085dd47b1e5792eefdcea1d6b61f242115ba07f9aa0c79aa871ba7eb9bd6f","abstract_canon_sha256":"a4cec4f99701d4ad88271ad6381b7daa9e1672e09d2db6118beef00e0192b6a3"},"schema_version":"1.0"},"canonical_sha256":"c555b14610ff78339c56792143905fa046c2f0a3ec7f6a3faaf562b09596f9fa","source":{"kind":"arxiv","id":"cond-mat/0408172","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0408172","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0408172v1","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0408172","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"pith_short_12","alias_value":"YVK3CRQQ754D","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"pith_short_16","alias_value":"YVK3CRQQ754DHHCW","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"pith_short_8","alias_value":"YVK3CRQQ","created_at":"2026-07-04T16:46:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:YVK3CRQQ754DHHCWPEQUHEC7UB","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0408172","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2004-08-09T05:31:16Z","cross_cats_sorted":[],"title_canon_sha256":"98a085dd47b1e5792eefdcea1d6b61f242115ba07f9aa0c79aa871ba7eb9bd6f","abstract_canon_sha256":"a4cec4f99701d4ad88271ad6381b7daa9e1672e09d2db6118beef00e0192b6a3"},"schema_version":"1.0"},"canonical_sha256":"c555b14610ff78339c56792143905fa046c2f0a3ec7f6a3faaf562b09596f9fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:46:52.274954Z","signature_b64":"vc6AN87nwxdUshOCmPhlFR352XD2tFtjKBB7rABgwo5AlASkRnld9G7jVjnkSpK+3lQtq/dhM46XSL14sGxYCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c555b14610ff78339c56792143905fa046c2f0a3ec7f6a3faaf562b09596f9fa","last_reissued_at":"2026-07-04T16:46:52.274576Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:46:52.274576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0408172","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:46:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DpMzRAnfh9PvEqpXV9kQZC1MHHA361mcw9d8ZcLl+mXsL5grLxy3IzyPzTDPNJyWFlhjMQxK38muKK6SGHDiBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T00:55:34.198105Z"},"content_sha256":"368afefeb98cf5a9a790f3c31f75ce3486c67225139b84978eff4cd546fc5766","schema_version":"1.0","event_id":"sha256:368afefeb98cf5a9a790f3c31f75ce3486c67225139b84978eff4cd546fc5766"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:YVK3CRQQ754DHHCWPEQUHEC7UB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Excitonic effect on optical response in one-dimensional two-band Hubbard model","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"H. Matsueda, S. Maekawa, T. Tohyama","submitted_at":"2004-08-09T05:31:16Z","abstract_excerpt":"Motivated by the gigantic nonlinear optical response in the halogen-bridged Ni-compounds, the underlying electronic states of the compounds are examined in the one-dimensional two-band Hubbard model, by studying the current-current correlation function and the charge density in the ground state. The dynamical density matrix renormalization group method is employed. We find that the low-energy peak of the correlation function consists of a single Lorentzian component for a parameter range appropriate to the compounds. This is due to an excitonic state induced by the intersite Coulomb repulsion "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0408172","kind":"arxiv","version":1},"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/0408172/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":"2026-07-04T16:46:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OnWbyiL+U1hMTWV+yEj556QfxhRHHXPtgQSbo7+9md7PwLByqgNlkGUlQjOShN7O6bn/b3GtR1bJ4xv7vCrLCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T00:55:34.199407Z"},"content_sha256":"e2bc4e0e5288d715c224bcf6ae373c309e647d06927aa13e6a18c38f16e05693","schema_version":"1.0","event_id":"sha256:e2bc4e0e5288d715c224bcf6ae373c309e647d06927aa13e6a18c38f16e05693"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YVK3CRQQ754DHHCWPEQUHEC7UB/bundle.json","state_url":"https://pith.science/pith/YVK3CRQQ754DHHCWPEQUHEC7UB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YVK3CRQQ754DHHCWPEQUHEC7UB/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":"2026-08-10T00:55:34Z","links":{"resolver":"https://pith.science/pith/YVK3CRQQ754DHHCWPEQUHEC7UB","bundle":"https://pith.science/pith/YVK3CRQQ754DHHCWPEQUHEC7UB/bundle.json","state":"https://pith.science/pith/YVK3CRQQ754DHHCWPEQUHEC7UB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YVK3CRQQ754DHHCWPEQUHEC7UB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:YVK3CRQQ754DHHCWPEQUHEC7UB","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":"a4cec4f99701d4ad88271ad6381b7daa9e1672e09d2db6118beef00e0192b6a3","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2004-08-09T05:31:16Z","title_canon_sha256":"98a085dd47b1e5792eefdcea1d6b61f242115ba07f9aa0c79aa871ba7eb9bd6f"},"schema_version":"1.0","source":{"id":"cond-mat/0408172","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0408172","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0408172v1","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0408172","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"pith_short_12","alias_value":"YVK3CRQQ754D","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"pith_short_16","alias_value":"YVK3CRQQ754DHHCW","created_at":"2026-07-04T16:46:52Z"},{"alias_kind":"pith_short_8","alias_value":"YVK3CRQQ","created_at":"2026-07-04T16:46:52Z"}],"graph_snapshots":[{"event_id":"sha256:e2bc4e0e5288d715c224bcf6ae373c309e647d06927aa13e6a18c38f16e05693","target":"graph","created_at":"2026-07-04T16:46:52Z","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/0408172/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Motivated by the gigantic nonlinear optical response in the halogen-bridged Ni-compounds, the underlying electronic states of the compounds are examined in the one-dimensional two-band Hubbard model, by studying the current-current correlation function and the charge density in the ground state. The dynamical density matrix renormalization group method is employed. We find that the low-energy peak of the correlation function consists of a single Lorentzian component for a parameter range appropriate to the compounds. This is due to an excitonic state induced by the intersite Coulomb repulsion ","authors_text":"H. Matsueda, S. Maekawa, T. Tohyama","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.str-el","submitted_at":"2004-08-09T05:31:16Z","title":"Excitonic effect on optical response in one-dimensional two-band Hubbard model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0408172","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":"sha256:368afefeb98cf5a9a790f3c31f75ce3486c67225139b84978eff4cd546fc5766","target":"record","created_at":"2026-07-04T16:46:52Z","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":"a4cec4f99701d4ad88271ad6381b7daa9e1672e09d2db6118beef00e0192b6a3","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2004-08-09T05:31:16Z","title_canon_sha256":"98a085dd47b1e5792eefdcea1d6b61f242115ba07f9aa0c79aa871ba7eb9bd6f"},"schema_version":"1.0","source":{"id":"cond-mat/0408172","kind":"arxiv","version":1}},"canonical_sha256":"c555b14610ff78339c56792143905fa046c2f0a3ec7f6a3faaf562b09596f9fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c555b14610ff78339c56792143905fa046c2f0a3ec7f6a3faaf562b09596f9fa","first_computed_at":"2026-07-04T16:46:52.274576Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:46:52.274576Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vc6AN87nwxdUshOCmPhlFR352XD2tFtjKBB7rABgwo5AlASkRnld9G7jVjnkSpK+3lQtq/dhM46XSL14sGxYCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:46:52.274954Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0408172","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:368afefeb98cf5a9a790f3c31f75ce3486c67225139b84978eff4cd546fc5766","sha256:e2bc4e0e5288d715c224bcf6ae373c309e647d06927aa13e6a18c38f16e05693"],"state_sha256":"102ae8819849967945e7147b55918133e7558157ff542eb298ade77996553cd1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fJ6RN1wh9jDjD5aJozgrn42Vo6bENM0lnKmI6XtfWtJi81fVIGFLIypuwX1c3Bo/HeWP4cxlnxd2lYXWNNJaAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T00:55:34.206016Z","bundle_sha256":"b394c5040c07fa688286238bfc67a19cac83e09a39dc88577f95dfcba8adca3b"}}