{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:O5442CUTC6W3WFIL65SUCH3VAS","short_pith_number":"pith:O5442CUT","canonical_record":{"source":{"id":"1207.1525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T05:46:54Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"d13f59b60b105921bb33801d09f8e2a6fb3cc729a62f571d08286453165ad647","abstract_canon_sha256":"877d3cd2aabad39944ebf8edb3f5c97ac9ccd38bfc267549af1dd5d34101d644"},"schema_version":"1.0"},"canonical_sha256":"7779cd0a9317adbb150bf765411f7504818228fd3c0022d56746b504c80732b6","source":{"kind":"arxiv","id":"1207.1525","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1525","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1525v1","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1525","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"pith_short_12","alias_value":"O5442CUTC6W3","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"O5442CUTC6W3WFIL","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"O5442CUT","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:O5442CUTC6W3WFIL65SUCH3VAS","target":"record","payload":{"canonical_record":{"source":{"id":"1207.1525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T05:46:54Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"d13f59b60b105921bb33801d09f8e2a6fb3cc729a62f571d08286453165ad647","abstract_canon_sha256":"877d3cd2aabad39944ebf8edb3f5c97ac9ccd38bfc267549af1dd5d34101d644"},"schema_version":"1.0"},"canonical_sha256":"7779cd0a9317adbb150bf765411f7504818228fd3c0022d56746b504c80732b6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:43:40.033475Z","signature_b64":"wjJ/Ig04PiiTQveffhNWiueK8rvX+NP4VTuAuwJS8C2Om/A2T4HUSVG0cga46dPp0/qqGJKYw4gbYW7RImzrDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7779cd0a9317adbb150bf765411f7504818228fd3c0022d56746b504c80732b6","last_reissued_at":"2026-05-18T03:43:40.032953Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:43:40.032953Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.1525","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":"2026-05-18T03:43:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7b4Q3xzs+L6i47oaxWQfM128YyuY0SfP6VpP+d6pxytD05O67G1+DVJKLT8ASch8vpoekmPhWhcCkXaBSaV9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T12:16:46.118959Z"},"content_sha256":"44c91c1ece59ef34723fbe4a2c38f3ccd0446d7f7632362fbaed20936f316a1c","schema_version":"1.0","event_id":"sha256:44c91c1ece59ef34723fbe4a2c38f3ccd0446d7f7632362fbaed20936f316a1c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:O5442CUTC6W3WFIL65SUCH3VAS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Double Exchange Ferromagnetism in the Peierls Insulator State","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"S. Nishimoto, Y. Ohta","submitted_at":"2012-07-06T05:46:54Z","abstract_excerpt":"We study the effects of opening of the band gap on the double exchange ferromagnetism. Applying the density-matrix renormalization group method and an analytical expansion from the dimer limit to the one-dimensional double exchange model, we demonstrate for a relevant region of the exchange coupling that, in the weak dimerization regime, the Peierls gap opens in the fully spin-polarized conduction band without affecting its ferromagnetism, whereas in the strong dimerization regime, the ferromagnetism is destroyed and the Mott gap opens instead, leading the system to the antiferromagnetic quasi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1525","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":""},"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":"2026-05-18T03:43:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a02515du4JewhaNydgyiuu7l+EspT5sz6+ytpFJtp323bN/B3mnZ9C9A/PMuVlZA9qNIsj8KQ0Mm7kwQ2ks0AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T12:16:46.119634Z"},"content_sha256":"4f494f49cb649b0fd356f1a83781e739f72b1c78ab8dfcffae02d11350e3abf5","schema_version":"1.0","event_id":"sha256:4f494f49cb649b0fd356f1a83781e739f72b1c78ab8dfcffae02d11350e3abf5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O5442CUTC6W3WFIL65SUCH3VAS/bundle.json","state_url":"https://pith.science/pith/O5442CUTC6W3WFIL65SUCH3VAS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O5442CUTC6W3WFIL65SUCH3VAS/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":"2026-06-08T12:16:46Z","links":{"resolver":"https://pith.science/pith/O5442CUTC6W3WFIL65SUCH3VAS","bundle":"https://pith.science/pith/O5442CUTC6W3WFIL65SUCH3VAS/bundle.json","state":"https://pith.science/pith/O5442CUTC6W3WFIL65SUCH3VAS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O5442CUTC6W3WFIL65SUCH3VAS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:O5442CUTC6W3WFIL65SUCH3VAS","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":"877d3cd2aabad39944ebf8edb3f5c97ac9ccd38bfc267549af1dd5d34101d644","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T05:46:54Z","title_canon_sha256":"d13f59b60b105921bb33801d09f8e2a6fb3cc729a62f571d08286453165ad647"},"schema_version":"1.0","source":{"id":"1207.1525","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1525","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1525v1","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1525","created_at":"2026-05-18T03:43:40Z"},{"alias_kind":"pith_short_12","alias_value":"O5442CUTC6W3","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"O5442CUTC6W3WFIL","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"O5442CUT","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:4f494f49cb649b0fd356f1a83781e739f72b1c78ab8dfcffae02d11350e3abf5","target":"graph","created_at":"2026-05-18T03:43:40Z","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 study the effects of opening of the band gap on the double exchange ferromagnetism. Applying the density-matrix renormalization group method and an analytical expansion from the dimer limit to the one-dimensional double exchange model, we demonstrate for a relevant region of the exchange coupling that, in the weak dimerization regime, the Peierls gap opens in the fully spin-polarized conduction band without affecting its ferromagnetism, whereas in the strong dimerization regime, the ferromagnetism is destroyed and the Mott gap opens instead, leading the system to the antiferromagnetic quasi","authors_text":"S. Nishimoto, Y. Ohta","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T05:46:54Z","title":"Double Exchange Ferromagnetism in the Peierls Insulator State"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1525","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":"sha256:44c91c1ece59ef34723fbe4a2c38f3ccd0446d7f7632362fbaed20936f316a1c","target":"record","created_at":"2026-05-18T03:43:40Z","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":"877d3cd2aabad39944ebf8edb3f5c97ac9ccd38bfc267549af1dd5d34101d644","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-07-06T05:46:54Z","title_canon_sha256":"d13f59b60b105921bb33801d09f8e2a6fb3cc729a62f571d08286453165ad647"},"schema_version":"1.0","source":{"id":"1207.1525","kind":"arxiv","version":1}},"canonical_sha256":"7779cd0a9317adbb150bf765411f7504818228fd3c0022d56746b504c80732b6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7779cd0a9317adbb150bf765411f7504818228fd3c0022d56746b504c80732b6","first_computed_at":"2026-05-18T03:43:40.032953Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:43:40.032953Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wjJ/Ig04PiiTQveffhNWiueK8rvX+NP4VTuAuwJS8C2Om/A2T4HUSVG0cga46dPp0/qqGJKYw4gbYW7RImzrDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:43:40.033475Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.1525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:44c91c1ece59ef34723fbe4a2c38f3ccd0446d7f7632362fbaed20936f316a1c","sha256:4f494f49cb649b0fd356f1a83781e739f72b1c78ab8dfcffae02d11350e3abf5"],"state_sha256":"afa403e9d51d242ad2a07230a7be93af17bf232e88a36f7323221d48427f783c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yl7L4eU/Y9ZGY4owGbA38MrjQ1DC41abnUUyOqP2HiwrYmTx0gs7O5P3uAFfK/i+hsWGLY5FgDY4tzHxhscdAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T12:16:46.122578Z","bundle_sha256":"b5497fb319e1ba7a2ce9be8df30c314f2102171bde9ff0ea060e0b5ea397b531"}}