{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:LZ5D2TKIMXAY7C3YV7EUWM625K","short_pith_number":"pith:LZ5D2TKI","schema_version":"1.0","canonical_sha256":"5e7a3d4d4865c18f8b78afc94b33daea8c80f595dbf5a6f3dfad0906973ef856","source":{"kind":"arxiv","id":"1601.06620","version":2},"attestation_state":"computed","paper":{"title":"Appearance of causality in process matrices when performing fixed-basis measurements for two parties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"\\v{C}aslav Brukner, Veronika Baumann","submitted_at":"2016-01-25T14:46:00Z","abstract_excerpt":"The recently developed framework for quantum theory with no global causal order allows for quantum processes in which operations in local laboratories are neither causally ordered nor in a probabilistic mixture of definite causal orders. The causal relation between the laboratories is described by the process matrix. We show that, if the inputs of the laboratories are measured in a fixed basis, one can introduce an effective process matrix which is operationally indistinguishable from the original one. This effective process matrix can be obtained by applying the von Neumann- Lu\\\"ders update r"},"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":"1601.06620","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-01-25T14:46:00Z","cross_cats_sorted":[],"title_canon_sha256":"946177ae640bcb9f0f292d1cf8171c289c33c327224c45ae433c344fc3e40da6","abstract_canon_sha256":"bd61c670252706a51e9b16a64205fd4a6611c064eac2b1b2267d1ea75db7eead"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:21.569886Z","signature_b64":"FbU33AK12C8Wj7WZzkX7D8c/dM6XPix6fV+0XTZDu9a6fEYcsAGoZ/tDOTdsHq/OxZ/i7h5ikwx7oqpkpgUoBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e7a3d4d4865c18f8b78afc94b33daea8c80f595dbf5a6f3dfad0906973ef856","last_reissued_at":"2026-05-18T01:04:21.569434Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:21.569434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Appearance of causality in process matrices when performing fixed-basis measurements for two parties","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"\\v{C}aslav Brukner, Veronika Baumann","submitted_at":"2016-01-25T14:46:00Z","abstract_excerpt":"The recently developed framework for quantum theory with no global causal order allows for quantum processes in which operations in local laboratories are neither causally ordered nor in a probabilistic mixture of definite causal orders. The causal relation between the laboratories is described by the process matrix. We show that, if the inputs of the laboratories are measured in a fixed basis, one can introduce an effective process matrix which is operationally indistinguishable from the original one. This effective process matrix can be obtained by applying the von Neumann- Lu\\\"ders update r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.06620","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":""},"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":"1601.06620","created_at":"2026-05-18T01:04:21.569501+00:00"},{"alias_kind":"arxiv_version","alias_value":"1601.06620v2","created_at":"2026-05-18T01:04:21.569501+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.06620","created_at":"2026-05-18T01:04:21.569501+00:00"},{"alias_kind":"pith_short_12","alias_value":"LZ5D2TKIMXAY","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_16","alias_value":"LZ5D2TKIMXAY7C3Y","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_8","alias_value":"LZ5D2TKI","created_at":"2026-05-18T12:30:29.479603+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2605.22807","citing_title":"How many systems can be dephased before the quantum switch becomes causally definite?","ref_index":5,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K","json":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K.json","graph_json":"https://pith.science/api/pith-number/LZ5D2TKIMXAY7C3YV7EUWM625K/graph.json","events_json":"https://pith.science/api/pith-number/LZ5D2TKIMXAY7C3YV7EUWM625K/events.json","paper":"https://pith.science/paper/LZ5D2TKI"},"agent_actions":{"view_html":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K","download_json":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K.json","view_paper":"https://pith.science/paper/LZ5D2TKI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1601.06620&json=true","fetch_graph":"https://pith.science/api/pith-number/LZ5D2TKIMXAY7C3YV7EUWM625K/graph.json","fetch_events":"https://pith.science/api/pith-number/LZ5D2TKIMXAY7C3YV7EUWM625K/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K/action/storage_attestation","attest_author":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K/action/author_attestation","sign_citation":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K/action/citation_signature","submit_replication":"https://pith.science/pith/LZ5D2TKIMXAY7C3YV7EUWM625K/action/replication_record"}},"created_at":"2026-05-18T01:04:21.569501+00:00","updated_at":"2026-05-18T01:04:21.569501+00:00"}