{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:RCDZPNW6EQSSQ574VDDLWFJUMY","short_pith_number":"pith:RCDZPNW6","schema_version":"1.0","canonical_sha256":"888797b6de24252877fca8c6bb1534660f58905b9904456072767212ad3e95f4","source":{"kind":"arxiv","id":"1203.3091","version":1},"attestation_state":"computed","paper":{"title":"A general hidden variable model for the two-qubits system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Giancarlo Ghirardi, Raffaele Romano","submitted_at":"2012-03-14T14:07:13Z","abstract_excerpt":"We generalize Bell's hidden variable model describing the singlet state of a two-qubits system by extending it to arbitrary states and observables. As in the original work, we assume a uniform, state-independent probability distribution for the hidden variables which are identified with the unit vectors of a 3-dimensional real space. By slightly modifying our model, we provide also a minimal hidden variable description of the two-qubits system, relying on a single hidden variable. We discuss the main features and the implications of the model."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1203.3091","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-14T14:07:13Z","cross_cats_sorted":[],"title_canon_sha256":"b0830f7b23d1c14c2c02562cb9cf6289b7821e5a3c007dfe42f1a32f0d1ea87c","abstract_canon_sha256":"f1a287a632ddbf7ab2399c5078c48a3a1c27c6cf6325120724076c77c7d3295f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:08.887859Z","signature_b64":"DkAw2jm4riUJpPQCunfKzLz2IqC+Li4ueajzpWx7Gcxc1DixtT5xcj4Fx+54elASPMhVCrqUZvvYdDZl5ormCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"888797b6de24252877fca8c6bb1534660f58905b9904456072767212ad3e95f4","last_reissued_at":"2026-05-18T01:58:08.887420Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:08.887420Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A general hidden variable model for the two-qubits system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Giancarlo Ghirardi, Raffaele Romano","submitted_at":"2012-03-14T14:07:13Z","abstract_excerpt":"We generalize Bell's hidden variable model describing the singlet state of a two-qubits system by extending it to arbitrary states and observables. As in the original work, we assume a uniform, state-independent probability distribution for the hidden variables which are identified with the unit vectors of a 3-dimensional real space. By slightly modifying our model, we provide also a minimal hidden variable description of the two-qubits system, relying on a single hidden variable. We discuss the main features and the implications of the model."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.3091","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1203.3091","created_at":"2026-05-18T01:58:08.887490+00:00"},{"alias_kind":"arxiv_version","alias_value":"1203.3091v1","created_at":"2026-05-18T01:58:08.887490+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.3091","created_at":"2026-05-18T01:58:08.887490+00:00"},{"alias_kind":"pith_short_12","alias_value":"RCDZPNW6EQSS","created_at":"2026-05-18T12:27:20.899486+00:00"},{"alias_kind":"pith_short_16","alias_value":"RCDZPNW6EQSSQ574","created_at":"2026-05-18T12:27:20.899486+00:00"},{"alias_kind":"pith_short_8","alias_value":"RCDZPNW6","created_at":"2026-05-18T12:27:20.899486+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY","json":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY.json","graph_json":"https://pith.science/api/pith-number/RCDZPNW6EQSSQ574VDDLWFJUMY/graph.json","events_json":"https://pith.science/api/pith-number/RCDZPNW6EQSSQ574VDDLWFJUMY/events.json","paper":"https://pith.science/paper/RCDZPNW6"},"agent_actions":{"view_html":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY","download_json":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY.json","view_paper":"https://pith.science/paper/RCDZPNW6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1203.3091&json=true","fetch_graph":"https://pith.science/api/pith-number/RCDZPNW6EQSSQ574VDDLWFJUMY/graph.json","fetch_events":"https://pith.science/api/pith-number/RCDZPNW6EQSSQ574VDDLWFJUMY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY/action/storage_attestation","attest_author":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY/action/author_attestation","sign_citation":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY/action/citation_signature","submit_replication":"https://pith.science/pith/RCDZPNW6EQSSQ574VDDLWFJUMY/action/replication_record"}},"created_at":"2026-05-18T01:58:08.887490+00:00","updated_at":"2026-05-18T01:58:08.887490+00:00"}