{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:ZBDUMEUUEBQPMSNPJCHSMM5NRW","short_pith_number":"pith:ZBDUMEUU","canonical_record":{"source":{"id":"1010.0159","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-01T13:35:01Z","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"title_canon_sha256":"558b19c5401ee5c2035873688bddd13f4eec11a41ee52fa84492656178a00d2a","abstract_canon_sha256":"be6fbe4e1a2e643362080fbb78b4201ddfa6386a274a411486c6b3c6a9520cea"},"schema_version":"1.0"},"canonical_sha256":"c8474612942060f649af488f2633ad8db8ed052da403c00436782f78c8f72ba3","source":{"kind":"arxiv","id":"1010.0159","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.0159","created_at":"2026-05-18T04:33:04Z"},{"alias_kind":"arxiv_version","alias_value":"1010.0159v1","created_at":"2026-05-18T04:33:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.0159","created_at":"2026-05-18T04:33:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZBDUMEUUEBQP","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"ZBDUMEUUEBQPMSNP","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"ZBDUMEUU","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:ZBDUMEUUEBQPMSNPJCHSMM5NRW","target":"record","payload":{"canonical_record":{"source":{"id":"1010.0159","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-01T13:35:01Z","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"title_canon_sha256":"558b19c5401ee5c2035873688bddd13f4eec11a41ee52fa84492656178a00d2a","abstract_canon_sha256":"be6fbe4e1a2e643362080fbb78b4201ddfa6386a274a411486c6b3c6a9520cea"},"schema_version":"1.0"},"canonical_sha256":"c8474612942060f649af488f2633ad8db8ed052da403c00436782f78c8f72ba3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:33:04.084073Z","signature_b64":"XtAlVdPF8+/GCJ6o33JUCRtU5L4FnJ7pI5QJ3h+inzhS8MLiEKnUEhjR3Fjj2AccjKxvaUV2sB4i1nZ4t15sBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8474612942060f649af488f2633ad8db8ed052da403c00436782f78c8f72ba3","last_reissued_at":"2026-05-18T04:33:04.083508Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:33:04.083508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.0159","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":"2026-05-18T04:33:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YVNigyG4QFPGKB8RUtcQT9VliOFF+Lr8bAccJU2TJZ5gj4RXi06NjJtjiB+ipozOu0TJYSVOQSsxPnPDKUsuDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T12:57:20.259583Z"},"content_sha256":"1c663184d28be269e9c4e402b457ff6b023fdbd516a1a2364acea592a372257a","schema_version":"1.0","event_id":"sha256:1c663184d28be269e9c4e402b457ff6b023fdbd516a1a2364acea592a372257a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:ZBDUMEUUEBQPMSNPJCHSMM5NRW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hidden XY structure of the bond-charge Hubbard model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","quant-ph"],"primary_cat":"cond-mat.str-el","authors_text":"Arianna Montorsi, Cristian Degli Esposti Boschi, Marco Roncaglia","submitted_at":"2010-10-01T13:35:01Z","abstract_excerpt":"The repulsive one-dimensional Hubbard model with bond-charge interaction (HBC) in the superconducting regime is mapped onto the spin-1/2 XY model with transverse field. We calculate correlations and phase boundaries, realizing an excellent agreement with numerical results. The critical line for the superconducting transition is shown to coincide with the analytical factorization line identifying the commensurate-incommensurate transition in the XY model."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.0159","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":"2026-05-18T04:33:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pcC2FPeKSC0l/BHvLTvkUV+rkxWbLWVeQhaUBGH6QuFGGpEtfpYR+BbXsMXoNuWFW+uouLbmd+0WBfA0lQD3CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T12:57:20.260216Z"},"content_sha256":"e34320c4df90bcd21f070c5733cf6b9b894e5b5885af53c492e03dfe6624ff24","schema_version":"1.0","event_id":"sha256:e34320c4df90bcd21f070c5733cf6b9b894e5b5885af53c492e03dfe6624ff24"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZBDUMEUUEBQPMSNPJCHSMM5NRW/bundle.json","state_url":"https://pith.science/pith/ZBDUMEUUEBQPMSNPJCHSMM5NRW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZBDUMEUUEBQPMSNPJCHSMM5NRW/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":"2026-06-08T12:57:20Z","links":{"resolver":"https://pith.science/pith/ZBDUMEUUEBQPMSNPJCHSMM5NRW","bundle":"https://pith.science/pith/ZBDUMEUUEBQPMSNPJCHSMM5NRW/bundle.json","state":"https://pith.science/pith/ZBDUMEUUEBQPMSNPJCHSMM5NRW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZBDUMEUUEBQPMSNPJCHSMM5NRW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ZBDUMEUUEBQPMSNPJCHSMM5NRW","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":"be6fbe4e1a2e643362080fbb78b4201ddfa6386a274a411486c6b3c6a9520cea","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-01T13:35:01Z","title_canon_sha256":"558b19c5401ee5c2035873688bddd13f4eec11a41ee52fa84492656178a00d2a"},"schema_version":"1.0","source":{"id":"1010.0159","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.0159","created_at":"2026-05-18T04:33:04Z"},{"alias_kind":"arxiv_version","alias_value":"1010.0159v1","created_at":"2026-05-18T04:33:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.0159","created_at":"2026-05-18T04:33:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZBDUMEUUEBQP","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"ZBDUMEUUEBQPMSNP","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"ZBDUMEUU","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:e34320c4df90bcd21f070c5733cf6b9b894e5b5885af53c492e03dfe6624ff24","target":"graph","created_at":"2026-05-18T04:33:04Z","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":"The repulsive one-dimensional Hubbard model with bond-charge interaction (HBC) in the superconducting regime is mapped onto the spin-1/2 XY model with transverse field. We calculate correlations and phase boundaries, realizing an excellent agreement with numerical results. The critical line for the superconducting transition is shown to coincide with the analytical factorization line identifying the commensurate-incommensurate transition in the XY model.","authors_text":"Arianna Montorsi, Cristian Degli Esposti Boschi, Marco Roncaglia","cross_cats":["cond-mat.supr-con","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-01T13:35:01Z","title":"Hidden XY structure of the bond-charge Hubbard model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.0159","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":"sha256:1c663184d28be269e9c4e402b457ff6b023fdbd516a1a2364acea592a372257a","target":"record","created_at":"2026-05-18T04:33:04Z","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":"be6fbe4e1a2e643362080fbb78b4201ddfa6386a274a411486c6b3c6a9520cea","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-10-01T13:35:01Z","title_canon_sha256":"558b19c5401ee5c2035873688bddd13f4eec11a41ee52fa84492656178a00d2a"},"schema_version":"1.0","source":{"id":"1010.0159","kind":"arxiv","version":1}},"canonical_sha256":"c8474612942060f649af488f2633ad8db8ed052da403c00436782f78c8f72ba3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8474612942060f649af488f2633ad8db8ed052da403c00436782f78c8f72ba3","first_computed_at":"2026-05-18T04:33:04.083508Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:33:04.083508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XtAlVdPF8+/GCJ6o33JUCRtU5L4FnJ7pI5QJ3h+inzhS8MLiEKnUEhjR3Fjj2AccjKxvaUV2sB4i1nZ4t15sBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:33:04.084073Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.0159","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c663184d28be269e9c4e402b457ff6b023fdbd516a1a2364acea592a372257a","sha256:e34320c4df90bcd21f070c5733cf6b9b894e5b5885af53c492e03dfe6624ff24"],"state_sha256":"2dc0bbe67082341e0f72769cff7a059cd6a81f6b372a4538e23ace0a88de87b1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FjviqKrqQ+Ui0O5gqGZgS6yB214yLwevJ7V8dQmw9lVHS/OQM5eLEAmHZeul4pfI0BfpNb0IS/6ao9Aly1cPCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T12:57:20.263433Z","bundle_sha256":"f03c19cf0dda178b0f62ac15c596dc555c1879c59c7efb030f259a8cdd8ce1e6"}}