{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:I47CP7OJKO3THUAAFSV735ZSLV","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":"0d8e8a3f3ef2d5deff85584194fc40d615cfceeb58d94ffab260595e5a1f57d4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-04-26T09:44:33Z","title_canon_sha256":"369b6c3eb9eb9c02ad25165af89807e0d65f9995e9362768340c0cf7ab5fbbb8"},"schema_version":"1.0","source":{"id":"1204.5868","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.5868","created_at":"2026-05-18T03:38:43Z"},{"alias_kind":"arxiv_version","alias_value":"1204.5868v1","created_at":"2026-05-18T03:38:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5868","created_at":"2026-05-18T03:38:43Z"},{"alias_kind":"pith_short_12","alias_value":"I47CP7OJKO3T","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"I47CP7OJKO3THUAA","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"I47CP7OJ","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:29562fcac53e34f7c5471bcbf3743e43b5fee76505e1f4539898bd5b3bf8feea","target":"graph","created_at":"2026-05-18T03:38:43Z","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":"Global quantum discord (GQD), proposed by Rulli and Sarandy [Phys. Rev. A \\textbf{84}, 042109 (2011)], is a generalization of quantum discord to multipartite states. In this paper, we provide an equivalent expression for GQD, and obtain the analytical expressions of GQD for two classes of multi-qubit states. The phenomena of sudden transition and freeze of GQD are also discussed.","authors_text":"Jianwei Xu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-04-26T09:44:33Z","title":"Global Quantum discord of multi-qubit states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5868","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:c72380d8b3c6d1bb818cfd3cccd7a79cb640e349bda8d9da37ec679466cbf182","target":"record","created_at":"2026-05-18T03:38:43Z","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":"0d8e8a3f3ef2d5deff85584194fc40d615cfceeb58d94ffab260595e5a1f57d4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-04-26T09:44:33Z","title_canon_sha256":"369b6c3eb9eb9c02ad25165af89807e0d65f9995e9362768340c0cf7ab5fbbb8"},"schema_version":"1.0","source":{"id":"1204.5868","kind":"arxiv","version":1}},"canonical_sha256":"473e27fdc953b733d0002cabfdf7325d44df8d5d8bfa3b828b1c5939332b3c68","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"473e27fdc953b733d0002cabfdf7325d44df8d5d8bfa3b828b1c5939332b3c68","first_computed_at":"2026-05-18T03:38:43.852267Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:38:43.852267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+ihKjWyMPNVWKTfEWIbjtcvQ7bG8kXHpdOcXaNKTclNrE7+VNEcJ2hHRbtHTujEtVI2iQBh9nzPkuxpeggt0CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:38:43.852864Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.5868","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c72380d8b3c6d1bb818cfd3cccd7a79cb640e349bda8d9da37ec679466cbf182","sha256:29562fcac53e34f7c5471bcbf3743e43b5fee76505e1f4539898bd5b3bf8feea"],"state_sha256":"f25ba06557bb89dc4afb80fb86246f2f8d0e83a94ce76c47876e35d1a5acf3b5"}