{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:LYGIQWDKC3C6YMMIWQA63YX3VM","short_pith_number":"pith:LYGIQWDK","canonical_record":{"source":{"id":"cond-mat/0007252","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-07-14T19:38:35Z","cross_cats_sorted":[],"title_canon_sha256":"7f097e49bec4d5ed0321444e2d7dec363699dd817c51e3759aa2071da954b25f","abstract_canon_sha256":"8ff6a566e48c5c37263e86f243e068ff4de244e1f25ace1cd7d40d76e822f7e7"},"schema_version":"1.0"},"canonical_sha256":"5e0c88586a16c5ec3188b401ede2fbab1ea21950a434a2df271e570c5c52bb8a","source":{"kind":"arxiv","id":"cond-mat/0007252","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0007252","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0007252v1","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0007252","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"pith_short_12","alias_value":"LYGIQWDKC3C6","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"pith_short_16","alias_value":"LYGIQWDKC3C6YMMI","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"pith_short_8","alias_value":"LYGIQWDK","created_at":"2026-07-04T14:17:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:LYGIQWDKC3C6YMMIWQA63YX3VM","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0007252","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-07-14T19:38:35Z","cross_cats_sorted":[],"title_canon_sha256":"7f097e49bec4d5ed0321444e2d7dec363699dd817c51e3759aa2071da954b25f","abstract_canon_sha256":"8ff6a566e48c5c37263e86f243e068ff4de244e1f25ace1cd7d40d76e822f7e7"},"schema_version":"1.0"},"canonical_sha256":"5e0c88586a16c5ec3188b401ede2fbab1ea21950a434a2df271e570c5c52bb8a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:17:55.423165Z","signature_b64":"HIPVe8dUSA8+Bfn12tywz2d3M0gyzx+LKX4zZdAH2yuke1ZP9MySriFxq5MTRbxarSG9HkFjTnafXtq60BE3AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e0c88586a16c5ec3188b401ede2fbab1ea21950a434a2df271e570c5c52bb8a","last_reissued_at":"2026-07-04T14:17:55.422650Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:17:55.422650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0007252","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":"2026-07-04T14:17:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2tlxiSqP0ujGylwLgjB9//dfJlxPNUTa9UVZrhY7z72ds2CUwSb1yU3XecT2bJOw3vNGNQq/ZM7pHdfWYLsRAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:44:13.643090Z"},"content_sha256":"5752ae58ca4cb9274102e01de09d74652c978562beee5bb95e062fc1cdeb5bb0","schema_version":"1.0","event_id":"sha256:5752ae58ca4cb9274102e01de09d74652c978562beee5bb95e062fc1cdeb5bb0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:LYGIQWDKC3C6YMMIWQA63YX3VM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"n(k) Structure and Matrix Elements in Photoemission: Results from Insulating Ca_2CuO_2Cl_2","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. Damascelli, C. Kim, D.H. Lu, F. Ronning, K.M. Shen, L.L. Miller (Iowa State), N.P. Armitage, Z.-X. Shen (Stanford University)","submitted_at":"2000-07-14T19:38:35Z","abstract_excerpt":"The photon energy dependence of angle-resolved photoemission data on Ca_2CuO_2Cl_2 is presented, and the role of the matrix element is investigated. It is shown that despite strong variations in the matrix element, the loss in intensity as one crosses the antiferromagnetic zone boundary is a robust feature of the Mott insulator. As expected for a two dimensional system, the dispersion remains independent of the photon energy even when the matrix element does not."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0007252","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/0007252/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":"2026-07-04T14:17:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KLhOcXYsGRuX0Gu1+8Oay0lRW+hs9wLwars7MGS2qXzW3QokC1n8zsQCQc59SppmeTN3faOe3Tamqa7n12TYDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:44:13.643472Z"},"content_sha256":"a5438573b4355bcb33ecf6f00a008f26354a2413771025759cda780e139904b8","schema_version":"1.0","event_id":"sha256:a5438573b4355bcb33ecf6f00a008f26354a2413771025759cda780e139904b8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LYGIQWDKC3C6YMMIWQA63YX3VM/bundle.json","state_url":"https://pith.science/pith/LYGIQWDKC3C6YMMIWQA63YX3VM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LYGIQWDKC3C6YMMIWQA63YX3VM/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":"2026-07-07T08:44:13Z","links":{"resolver":"https://pith.science/pith/LYGIQWDKC3C6YMMIWQA63YX3VM","bundle":"https://pith.science/pith/LYGIQWDKC3C6YMMIWQA63YX3VM/bundle.json","state":"https://pith.science/pith/LYGIQWDKC3C6YMMIWQA63YX3VM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LYGIQWDKC3C6YMMIWQA63YX3VM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:LYGIQWDKC3C6YMMIWQA63YX3VM","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":"8ff6a566e48c5c37263e86f243e068ff4de244e1f25ace1cd7d40d76e822f7e7","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-07-14T19:38:35Z","title_canon_sha256":"7f097e49bec4d5ed0321444e2d7dec363699dd817c51e3759aa2071da954b25f"},"schema_version":"1.0","source":{"id":"cond-mat/0007252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0007252","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0007252v1","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0007252","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"pith_short_12","alias_value":"LYGIQWDKC3C6","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"pith_short_16","alias_value":"LYGIQWDKC3C6YMMI","created_at":"2026-07-04T14:17:55Z"},{"alias_kind":"pith_short_8","alias_value":"LYGIQWDK","created_at":"2026-07-04T14:17:55Z"}],"graph_snapshots":[{"event_id":"sha256:a5438573b4355bcb33ecf6f00a008f26354a2413771025759cda780e139904b8","target":"graph","created_at":"2026-07-04T14:17:55Z","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/0007252/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The photon energy dependence of angle-resolved photoemission data on Ca_2CuO_2Cl_2 is presented, and the role of the matrix element is investigated. It is shown that despite strong variations in the matrix element, the loss in intensity as one crosses the antiferromagnetic zone boundary is a robust feature of the Mott insulator. As expected for a two dimensional system, the dispersion remains independent of the photon energy even when the matrix element does not.","authors_text":"A. Damascelli, C. Kim, D.H. Lu, F. Ronning, K.M. Shen, L.L. Miller (Iowa State), N.P. Armitage, Z.-X. Shen (Stanford University)","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-07-14T19:38:35Z","title":"n(k) Structure and Matrix Elements in Photoemission: Results from Insulating Ca_2CuO_2Cl_2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0007252","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":"sha256:5752ae58ca4cb9274102e01de09d74652c978562beee5bb95e062fc1cdeb5bb0","target":"record","created_at":"2026-07-04T14:17:55Z","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":"8ff6a566e48c5c37263e86f243e068ff4de244e1f25ace1cd7d40d76e822f7e7","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2000-07-14T19:38:35Z","title_canon_sha256":"7f097e49bec4d5ed0321444e2d7dec363699dd817c51e3759aa2071da954b25f"},"schema_version":"1.0","source":{"id":"cond-mat/0007252","kind":"arxiv","version":1}},"canonical_sha256":"5e0c88586a16c5ec3188b401ede2fbab1ea21950a434a2df271e570c5c52bb8a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e0c88586a16c5ec3188b401ede2fbab1ea21950a434a2df271e570c5c52bb8a","first_computed_at":"2026-07-04T14:17:55.422650Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:17:55.422650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HIPVe8dUSA8+Bfn12tywz2d3M0gyzx+LKX4zZdAH2yuke1ZP9MySriFxq5MTRbxarSG9HkFjTnafXtq60BE3AQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:17:55.423165Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0007252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5752ae58ca4cb9274102e01de09d74652c978562beee5bb95e062fc1cdeb5bb0","sha256:a5438573b4355bcb33ecf6f00a008f26354a2413771025759cda780e139904b8"],"state_sha256":"cae8e5124777d9509ee0b240c1f7e4776e8da5b7cfc5e6b302b8feaa67f9041f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V0+nNBsrfvOChQZLYm6KS9dtooQQn+yVnV+lB17BZksvM6IMoVOZWz4UxfHt/bxxaMXUl0W2pDUBIsbbC9sNBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T08:44:13.645400Z","bundle_sha256":"950ee0c4b81d1c577e48634851f639c38c667986fa0aaea05b2d0d37ca9cddcf"}}