{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:H2ADPM6ZRRC5JC6WU42AFJ33NY","short_pith_number":"pith:H2ADPM6Z","canonical_record":{"source":{"id":"1412.7901","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-12-26T07:06:23Z","cross_cats_sorted":[],"title_canon_sha256":"f48459e0fc657e0c6c2a169bff5d7dae399e464d64602d2c0613fdc7e9f741ef","abstract_canon_sha256":"59733554aefef919ac85e931f64088a7978f30bd651c9ac5440ea43e6a6c2ab6"},"schema_version":"1.0"},"canonical_sha256":"3e8037b3d98c45d48bd6a73402a77b6e113ae2ebb08ebac495a80bbbfece2d30","source":{"kind":"arxiv","id":"1412.7901","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.7901","created_at":"2026-05-18T01:18:00Z"},{"alias_kind":"arxiv_version","alias_value":"1412.7901v2","created_at":"2026-05-18T01:18:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.7901","created_at":"2026-05-18T01:18:00Z"},{"alias_kind":"pith_short_12","alias_value":"H2ADPM6ZRRC5","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"H2ADPM6ZRRC5JC6W","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"H2ADPM6Z","created_at":"2026-05-18T12:28:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:H2ADPM6ZRRC5JC6WU42AFJ33NY","target":"record","payload":{"canonical_record":{"source":{"id":"1412.7901","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-12-26T07:06:23Z","cross_cats_sorted":[],"title_canon_sha256":"f48459e0fc657e0c6c2a169bff5d7dae399e464d64602d2c0613fdc7e9f741ef","abstract_canon_sha256":"59733554aefef919ac85e931f64088a7978f30bd651c9ac5440ea43e6a6c2ab6"},"schema_version":"1.0"},"canonical_sha256":"3e8037b3d98c45d48bd6a73402a77b6e113ae2ebb08ebac495a80bbbfece2d30","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:00.161510Z","signature_b64":"ptW/9CNkEtf+McTWrq7ZacjFGRWbg9LXeQVVs+W+IlXcO6kU6BbzVRQvEGblw+ucguu3F7hdQiWnc7QMKATPAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e8037b3d98c45d48bd6a73402a77b6e113ae2ebb08ebac495a80bbbfece2d30","last_reissued_at":"2026-05-18T01:18:00.160819Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:00.160819Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.7901","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:18:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TdTu8+YZ3koI0e/pdxnDlHKrBl750VAleMQHj76pTwyKJuhKUWx6GtIpLQjoqsaobPAoEZpKt+4oA0m2xbDjCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T18:01:10.812049Z"},"content_sha256":"bff301ee2fe7aa73e6a522d5fba1187eb236628a209bd85d87f10ed11af6d6ef","schema_version":"1.0","event_id":"sha256:bff301ee2fe7aa73e6a522d5fba1187eb236628a209bd85d87f10ed11af6d6ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:H2ADPM6ZRRC5JC6WU42AFJ33NY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological Order Parameters of the Spin-1/2 Dimerized Heisenberg Ladder in Magnetic Field","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Toshikaze Kariyado, Yasuhiro Hatsugai","submitted_at":"2014-12-26T07:06:23Z","abstract_excerpt":"Topological properties of the spin-1/2 dimerized Heisenberg ladder are investigated focusing on the plateau phase in the magnetic field whose magnetization is half of the saturation value. Although the applied magnetic field removes most of the symmetries of the system, there is a symmetry protected topological phase supported by the spatial inversion symmetry. The Z_2 Berry phase associated with a symmetry respecting boundary and quantized into 0 and \\pi is used as a symmetry protected topological order parameter. Edge states are also analyzed to confirm the bulk-edge correspondence. In addit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.7901","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":""},"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":"2026-05-18T01:18:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T20rWhE7HCBkT3KNKzlp2bYcFc40C05I636V9ff5FZqrxfhCilFsBqGzbgiwYvnwpyNwmZbAriQ98B3cxd9fBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T18:01:10.812439Z"},"content_sha256":"5fa315a1b6da1fe8147150a7c46c99a441a30f090591f750414c15fcfdfd188f","schema_version":"1.0","event_id":"sha256:5fa315a1b6da1fe8147150a7c46c99a441a30f090591f750414c15fcfdfd188f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H2ADPM6ZRRC5JC6WU42AFJ33NY/bundle.json","state_url":"https://pith.science/pith/H2ADPM6ZRRC5JC6WU42AFJ33NY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H2ADPM6ZRRC5JC6WU42AFJ33NY/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":"2026-05-20T18:01:10Z","links":{"resolver":"https://pith.science/pith/H2ADPM6ZRRC5JC6WU42AFJ33NY","bundle":"https://pith.science/pith/H2ADPM6ZRRC5JC6WU42AFJ33NY/bundle.json","state":"https://pith.science/pith/H2ADPM6ZRRC5JC6WU42AFJ33NY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H2ADPM6ZRRC5JC6WU42AFJ33NY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:H2ADPM6ZRRC5JC6WU42AFJ33NY","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":"59733554aefef919ac85e931f64088a7978f30bd651c9ac5440ea43e6a6c2ab6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-12-26T07:06:23Z","title_canon_sha256":"f48459e0fc657e0c6c2a169bff5d7dae399e464d64602d2c0613fdc7e9f741ef"},"schema_version":"1.0","source":{"id":"1412.7901","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.7901","created_at":"2026-05-18T01:18:00Z"},{"alias_kind":"arxiv_version","alias_value":"1412.7901v2","created_at":"2026-05-18T01:18:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.7901","created_at":"2026-05-18T01:18:00Z"},{"alias_kind":"pith_short_12","alias_value":"H2ADPM6ZRRC5","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"H2ADPM6ZRRC5JC6W","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"H2ADPM6Z","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:5fa315a1b6da1fe8147150a7c46c99a441a30f090591f750414c15fcfdfd188f","target":"graph","created_at":"2026-05-18T01:18:00Z","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":"Topological properties of the spin-1/2 dimerized Heisenberg ladder are investigated focusing on the plateau phase in the magnetic field whose magnetization is half of the saturation value. Although the applied magnetic field removes most of the symmetries of the system, there is a symmetry protected topological phase supported by the spatial inversion symmetry. The Z_2 Berry phase associated with a symmetry respecting boundary and quantized into 0 and \\pi is used as a symmetry protected topological order parameter. Edge states are also analyzed to confirm the bulk-edge correspondence. In addit","authors_text":"Toshikaze Kariyado, Yasuhiro Hatsugai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-12-26T07:06:23Z","title":"Topological Order Parameters of the Spin-1/2 Dimerized Heisenberg Ladder in Magnetic Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.7901","kind":"arxiv","version":2},"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:bff301ee2fe7aa73e6a522d5fba1187eb236628a209bd85d87f10ed11af6d6ef","target":"record","created_at":"2026-05-18T01:18:00Z","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":"59733554aefef919ac85e931f64088a7978f30bd651c9ac5440ea43e6a6c2ab6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2014-12-26T07:06:23Z","title_canon_sha256":"f48459e0fc657e0c6c2a169bff5d7dae399e464d64602d2c0613fdc7e9f741ef"},"schema_version":"1.0","source":{"id":"1412.7901","kind":"arxiv","version":2}},"canonical_sha256":"3e8037b3d98c45d48bd6a73402a77b6e113ae2ebb08ebac495a80bbbfece2d30","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e8037b3d98c45d48bd6a73402a77b6e113ae2ebb08ebac495a80bbbfece2d30","first_computed_at":"2026-05-18T01:18:00.160819Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:00.160819Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ptW/9CNkEtf+McTWrq7ZacjFGRWbg9LXeQVVs+W+IlXcO6kU6BbzVRQvEGblw+ucguu3F7hdQiWnc7QMKATPAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:00.161510Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.7901","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bff301ee2fe7aa73e6a522d5fba1187eb236628a209bd85d87f10ed11af6d6ef","sha256:5fa315a1b6da1fe8147150a7c46c99a441a30f090591f750414c15fcfdfd188f"],"state_sha256":"a3e4c38b3be17d3cea091f2ba9e76e72cdb99af90c2feeebb0fd53111adc720e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sL6/mhHXYQfYwYsJJW2Ynf0VQQNYRf2TbNNHYH4hCOnGf5VX2hD+XLSPDDf3KQdw/AnuNZ3DWAIToh5P14K4Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T18:01:10.814429Z","bundle_sha256":"87d45a6da7a2d35e9b84291de65b5e3f61c8525d317ceb9eda7003a05ed2eff0"}}