{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:QESL5I2CHQVDOANFUX6IREJWL3","short_pith_number":"pith:QESL5I2C","canonical_record":{"source":{"id":"cond-mat/9806257","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1998-06-22T10:34:10Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"09470377c320d81ef1b4e7b3320826c32f294fc8c9e8c938295826fca53d991f","abstract_canon_sha256":"397850e7540675010f42265e6c69e9e224e7e6f2513c9045b8184d758f78361b"},"schema_version":"1.0"},"canonical_sha256":"8124bea3423c2a3701a5a5fc8891365ee9ce0f947deb65b425f72be16e8322c5","source":{"kind":"arxiv","id":"cond-mat/9806257","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9806257","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9806257v1","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9806257","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"pith_short_12","alias_value":"QESL5I2CHQVD","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"pith_short_16","alias_value":"QESL5I2CHQVDOANF","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"pith_short_8","alias_value":"QESL5I2C","created_at":"2026-07-04T16:08:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:QESL5I2CHQVDOANFUX6IREJWL3","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/9806257","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1998-06-22T10:34:10Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"09470377c320d81ef1b4e7b3320826c32f294fc8c9e8c938295826fca53d991f","abstract_canon_sha256":"397850e7540675010f42265e6c69e9e224e7e6f2513c9045b8184d758f78361b"},"schema_version":"1.0"},"canonical_sha256":"8124bea3423c2a3701a5a5fc8891365ee9ce0f947deb65b425f72be16e8322c5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:08:02.936087Z","signature_b64":"TaEjaCZp4aRol8BaXc2qypFlltltO0uj5z6S3vVxWglt71MLNuRVMUClpKJu2dEIO8+4hSd/GcLmLHT8T2Q2AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8124bea3423c2a3701a5a5fc8891365ee9ce0f947deb65b425f72be16e8322c5","last_reissued_at":"2026-07-04T16:08:02.935661Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:08:02.935661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/9806257","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":"2026-07-04T16:08:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MrDOMAOO1pfcxwQGEn/YYyivxrtncUuZORn+FmgYr5KqZ2vAjPmFnb8kXkjA/cXKsTrECh1EhLuAe7OgV6asAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:49:47.784416Z"},"content_sha256":"181967f35eab73de38ed0af630af0b44c43e31755973b45252d8ff8e916e8052","schema_version":"1.0","event_id":"sha256:181967f35eab73de38ed0af630af0b44c43e31755973b45252d8ff8e916e8052"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:QESL5I2CHQVDOANFUX6IREJWL3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Manifestation of spin-charge separation in the dynamic dielectric response of one--dimensional Sr2CuO3","license":"","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"H. Eisaki, J. Fink, K. Penc, M. Knupfer, M. S. Golden, N. Motoyama, R. Neudert, S. Uchida, W. Stephan","submitted_at":"1998-06-22T10:34:10Z","abstract_excerpt":"We have determined the dynamical dielectric response of a one-dimensional, correlated insulator by carrying out electron energy-loss spectroscopy on Sr2CuO3 single crystals. The observed momentum and energy dependence of the low-energy features, which correspond to collective transitions across the gap, are well described by an extended one-band Hubbard model with moderate nearest neighbor Coulomb interaction strength. An exciton-like peak appears with increasing momentum transfer. These observations provide experimental evidence for spin-charge separation in the relevant excitations of this c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9806257","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/9806257/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":"2026-07-04T16:08:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VXhT349rEGu37GEiWHMTJU0JyhYahbMj2fEgUyY5LFgn6438KuSkwDeHTXFHn50l6sWx5dGkecIcmwavQG/xDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:49:47.784963Z"},"content_sha256":"9f1c4c7768f3c8c443fd0b93385f4a11f3a90af28708741b35acf446d0b79b8d","schema_version":"1.0","event_id":"sha256:9f1c4c7768f3c8c443fd0b93385f4a11f3a90af28708741b35acf446d0b79b8d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QESL5I2CHQVDOANFUX6IREJWL3/bundle.json","state_url":"https://pith.science/pith/QESL5I2CHQVDOANFUX6IREJWL3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QESL5I2CHQVDOANFUX6IREJWL3/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":"2026-08-07T16:49:47Z","links":{"resolver":"https://pith.science/pith/QESL5I2CHQVDOANFUX6IREJWL3","bundle":"https://pith.science/pith/QESL5I2CHQVDOANFUX6IREJWL3/bundle.json","state":"https://pith.science/pith/QESL5I2CHQVDOANFUX6IREJWL3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QESL5I2CHQVDOANFUX6IREJWL3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:QESL5I2CHQVDOANFUX6IREJWL3","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":"397850e7540675010f42265e6c69e9e224e7e6f2513c9045b8184d758f78361b","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1998-06-22T10:34:10Z","title_canon_sha256":"09470377c320d81ef1b4e7b3320826c32f294fc8c9e8c938295826fca53d991f"},"schema_version":"1.0","source":{"id":"cond-mat/9806257","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9806257","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9806257v1","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9806257","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"pith_short_12","alias_value":"QESL5I2CHQVD","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"pith_short_16","alias_value":"QESL5I2CHQVDOANF","created_at":"2026-07-04T16:08:02Z"},{"alias_kind":"pith_short_8","alias_value":"QESL5I2C","created_at":"2026-07-04T16:08:02Z"}],"graph_snapshots":[{"event_id":"sha256:9f1c4c7768f3c8c443fd0b93385f4a11f3a90af28708741b35acf446d0b79b8d","target":"graph","created_at":"2026-07-04T16:08:02Z","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/9806257/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have determined the dynamical dielectric response of a one-dimensional, correlated insulator by carrying out electron energy-loss spectroscopy on Sr2CuO3 single crystals. The observed momentum and energy dependence of the low-energy features, which correspond to collective transitions across the gap, are well described by an extended one-band Hubbard model with moderate nearest neighbor Coulomb interaction strength. An exciton-like peak appears with increasing momentum transfer. These observations provide experimental evidence for spin-charge separation in the relevant excitations of this c","authors_text":"H. Eisaki, J. Fink, K. Penc, M. Knupfer, M. S. Golden, N. Motoyama, R. Neudert, S. Uchida, W. Stephan","cross_cats":["cond-mat.supr-con"],"headline":"","license":"","primary_cat":"cond-mat.str-el","submitted_at":"1998-06-22T10:34:10Z","title":"Manifestation of spin-charge separation in the dynamic dielectric response of one--dimensional Sr2CuO3"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9806257","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":"sha256:181967f35eab73de38ed0af630af0b44c43e31755973b45252d8ff8e916e8052","target":"record","created_at":"2026-07-04T16:08:02Z","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":"397850e7540675010f42265e6c69e9e224e7e6f2513c9045b8184d758f78361b","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1998-06-22T10:34:10Z","title_canon_sha256":"09470377c320d81ef1b4e7b3320826c32f294fc8c9e8c938295826fca53d991f"},"schema_version":"1.0","source":{"id":"cond-mat/9806257","kind":"arxiv","version":1}},"canonical_sha256":"8124bea3423c2a3701a5a5fc8891365ee9ce0f947deb65b425f72be16e8322c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8124bea3423c2a3701a5a5fc8891365ee9ce0f947deb65b425f72be16e8322c5","first_computed_at":"2026-07-04T16:08:02.935661Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:08:02.935661Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TaEjaCZp4aRol8BaXc2qypFlltltO0uj5z6S3vVxWglt71MLNuRVMUClpKJu2dEIO8+4hSd/GcLmLHT8T2Q2AA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:08:02.936087Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/9806257","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:181967f35eab73de38ed0af630af0b44c43e31755973b45252d8ff8e916e8052","sha256:9f1c4c7768f3c8c443fd0b93385f4a11f3a90af28708741b35acf446d0b79b8d"],"state_sha256":"7b9885d165c175369306c2a2b769e59753ce2cc4ab8093d91f950fcdd7b97efa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w5iuZMNbyL3JOwAiJn1pZTRVeEEnG5m0fgJxDymrCizRBOmxA5xnlLiX2CXyI9cRwI91Yw/P8zzextHeOZvnBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:49:47.789741Z","bundle_sha256":"a1ecee8d4305d49b15b4c6bbe868b598464de5275bafc3f93e25bfdb59fc2f16"}}