{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:2626HRWK2ERVETZNG37D2SBYOA","short_pith_number":"pith:2626HRWK","canonical_record":{"source":{"id":"cond-mat/0111107","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-11-07T11:18:39Z","cross_cats_sorted":[],"title_canon_sha256":"06f9f231da04d8bc9a877111d3ecdff19882937706da36b0030cf8b40b34bd35","abstract_canon_sha256":"05ee0b26c7985b4d31f8a592018f2233d44f86057e96c19d439a1eb45a483b56"},"schema_version":"1.0"},"canonical_sha256":"d7b5e3c6cad123524f2d36fe3d4838700436b1a953f0517728eabd64cda1fb19","source":{"kind":"arxiv","id":"cond-mat/0111107","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0111107","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0111107v2","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0111107","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"pith_short_12","alias_value":"2626HRWK2ERV","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"pith_short_16","alias_value":"2626HRWK2ERVETZN","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"pith_short_8","alias_value":"2626HRWK","created_at":"2026-07-04T15:03:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:2626HRWK2ERVETZNG37D2SBYOA","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0111107","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-11-07T11:18:39Z","cross_cats_sorted":[],"title_canon_sha256":"06f9f231da04d8bc9a877111d3ecdff19882937706da36b0030cf8b40b34bd35","abstract_canon_sha256":"05ee0b26c7985b4d31f8a592018f2233d44f86057e96c19d439a1eb45a483b56"},"schema_version":"1.0"},"canonical_sha256":"d7b5e3c6cad123524f2d36fe3d4838700436b1a953f0517728eabd64cda1fb19","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:03:29.149514Z","signature_b64":"1iLYRolCNz/j/ZmvTXNl0MX9+zNW2ELsrojyZAmZFSdsJdfMK8O03jbsOtj0bIs3zkDmEISYU4qQ8cZYbD7jDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7b5e3c6cad123524f2d36fe3d4838700436b1a953f0517728eabd64cda1fb19","last_reissued_at":"2026-07-04T15:03:29.149075Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:03:29.149075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0111107","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":"2026-07-04T15:03:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NCAigXFHHjHrkNfrKWbGcGhNPJ4m1nc4FCmN/G1A1EbWoTLFOWbJwudiK275MrEGcE00y9wo2RO3+NcoZ0ytDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T04:37:06.316448Z"},"content_sha256":"4c0e65856eba5b45f8e36c8111dc0d9f7561a7ce5de6e96c8905dbef868ecf26","schema_version":"1.0","event_id":"sha256:4c0e65856eba5b45f8e36c8111dc0d9f7561a7ce5de6e96c8905dbef868ecf26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:2626HRWK2ERVETZNG37D2SBYOA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Doping-driven transition to a time-reversal breaking state in the phase diagram of the cuprates","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C. Castellani, C. Di Castro, G. Sangiovanni, M. Capone, M. Grilli, S. Caprara","submitted_at":"2001-11-07T11:18:39Z","abstract_excerpt":"Motivated by recent tunnelling and Andreev-reflection experiments, we study the conditions for a quantum transition within the superconducting phase of the cuprates,in which a bulk imaginary (time-reversal breaking) $id_{xy}$component appears in addition to the $d_{x^2 - y^2}$ order parameter.\n  We examine in detail the role of some important physical features of the cuprates.In particular we show that a closed Fermi surface,a bilayer splitting, an orthorhombic distortion,and the proximity to a quantum critical point around optimal doping favor the appearance of the imaginary component. These "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0111107","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0111107/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":"2026-07-04T15:03:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HGkUlTU2VvQHc1NO1xGoI0z/Zcu1fW0FsN6b10jLD8SeVn0JU5zfMnUnxfePU4BSJMFu6iMDFqItCD1bn55bDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T04:37:06.316820Z"},"content_sha256":"20ae44b4edc76e2fda1d543b963c518f651451b354d34fa5775e8da635f9f410","schema_version":"1.0","event_id":"sha256:20ae44b4edc76e2fda1d543b963c518f651451b354d34fa5775e8da635f9f410"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2626HRWK2ERVETZNG37D2SBYOA/bundle.json","state_url":"https://pith.science/pith/2626HRWK2ERVETZNG37D2SBYOA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2626HRWK2ERVETZNG37D2SBYOA/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":"2026-07-05T04:37:06Z","links":{"resolver":"https://pith.science/pith/2626HRWK2ERVETZNG37D2SBYOA","bundle":"https://pith.science/pith/2626HRWK2ERVETZNG37D2SBYOA/bundle.json","state":"https://pith.science/pith/2626HRWK2ERVETZNG37D2SBYOA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2626HRWK2ERVETZNG37D2SBYOA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:2626HRWK2ERVETZNG37D2SBYOA","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":"05ee0b26c7985b4d31f8a592018f2233d44f86057e96c19d439a1eb45a483b56","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-11-07T11:18:39Z","title_canon_sha256":"06f9f231da04d8bc9a877111d3ecdff19882937706da36b0030cf8b40b34bd35"},"schema_version":"1.0","source":{"id":"cond-mat/0111107","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0111107","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0111107v2","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0111107","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"pith_short_12","alias_value":"2626HRWK2ERV","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"pith_short_16","alias_value":"2626HRWK2ERVETZN","created_at":"2026-07-04T15:03:29Z"},{"alias_kind":"pith_short_8","alias_value":"2626HRWK","created_at":"2026-07-04T15:03:29Z"}],"graph_snapshots":[{"event_id":"sha256:20ae44b4edc76e2fda1d543b963c518f651451b354d34fa5775e8da635f9f410","target":"graph","created_at":"2026-07-04T15:03:29Z","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/0111107/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Motivated by recent tunnelling and Andreev-reflection experiments, we study the conditions for a quantum transition within the superconducting phase of the cuprates,in which a bulk imaginary (time-reversal breaking) $id_{xy}$component appears in addition to the $d_{x^2 - y^2}$ order parameter.\n  We examine in detail the role of some important physical features of the cuprates.In particular we show that a closed Fermi surface,a bilayer splitting, an orthorhombic distortion,and the proximity to a quantum critical point around optimal doping favor the appearance of the imaginary component. These ","authors_text":"C. Castellani, C. Di Castro, G. Sangiovanni, M. Capone, M. Grilli, S. Caprara","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-11-07T11:18:39Z","title":"Doping-driven transition to a time-reversal breaking state in the phase diagram of the cuprates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0111107","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":"sha256:4c0e65856eba5b45f8e36c8111dc0d9f7561a7ce5de6e96c8905dbef868ecf26","target":"record","created_at":"2026-07-04T15:03:29Z","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":"05ee0b26c7985b4d31f8a592018f2233d44f86057e96c19d439a1eb45a483b56","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-11-07T11:18:39Z","title_canon_sha256":"06f9f231da04d8bc9a877111d3ecdff19882937706da36b0030cf8b40b34bd35"},"schema_version":"1.0","source":{"id":"cond-mat/0111107","kind":"arxiv","version":2}},"canonical_sha256":"d7b5e3c6cad123524f2d36fe3d4838700436b1a953f0517728eabd64cda1fb19","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7b5e3c6cad123524f2d36fe3d4838700436b1a953f0517728eabd64cda1fb19","first_computed_at":"2026-07-04T15:03:29.149075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:03:29.149075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1iLYRolCNz/j/ZmvTXNl0MX9+zNW2ELsrojyZAmZFSdsJdfMK8O03jbsOtj0bIs3zkDmEISYU4qQ8cZYbD7jDw==","signature_status":"signed_v1","signed_at":"2026-07-04T15:03:29.149514Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0111107","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c0e65856eba5b45f8e36c8111dc0d9f7561a7ce5de6e96c8905dbef868ecf26","sha256:20ae44b4edc76e2fda1d543b963c518f651451b354d34fa5775e8da635f9f410"],"state_sha256":"6c27da2884c7eaf8241e0595a932e7fb23480b47f9dafac9dfd3d8bc8869c26a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bQw0sNz8S78g7YzLM1Iugqsyo4rfnjUDnk1cwVyiNhke3V3OzhDp/Lj97dDZJgg3zkYXdUcYXmg9gxivRe1fBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T04:37:06.318723Z","bundle_sha256":"516aa93a160e0f93a212d78ef8fc13ef843949f74e001865608d1f0211dcb770"}}