{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:XFBGMMNAEN6KA7DI3XYPXWCJUX","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":"1a7a0b36056d5352d96a7a29e9c478d244305740073a996a6cae1b8641a1f011","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-03T15:07:41Z","title_canon_sha256":"18c1a2684556134354c5b11fa158fe903daf2a76a75c0a57f9f4468b7f91b00d"},"schema_version":"1.0","source":{"id":"1406.0740","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0740","created_at":"2026-05-18T02:44:08Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0740v2","created_at":"2026-05-18T02:44:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0740","created_at":"2026-05-18T02:44:08Z"},{"alias_kind":"pith_short_12","alias_value":"XFBGMMNAEN6K","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"XFBGMMNAEN6KA7DI","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"XFBGMMNA","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:2d60df79e1be45f15dd0e4023c30cebb1f577cf5960bc7dff12ff65fe311fa84","target":"graph","created_at":"2026-05-18T02:44:08Z","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":"Ozawa's measurement-disturbance relation is generalized to a phase-space noncommutative extension of quantum mechanics. It is shown that the measurement-disturbance relations have additional terms for backaction evading quadrature amplifiers and for noiseless quadrature transducers. Several distinctive features appear as a consequence of the noncommutative extension: measurement interactions which are noiseless, and observables which are undisturbed by a measurement, or of independent intervention in ordinary quantum mechanics, may acquire noise, become disturbed by the measurement, or no long","authors_text":"Alex E. Bernardini, Catarina Bastos, Jo\\~ao Prata, Nuno Dias, Orfeu Bertolami","cross_cats":["gr-qc","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-03T15:07:41Z","title":"Phase-space noncommutative formulation of Ozawa's uncertainty principle"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0740","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":"sha256:34a6b9b4ce3791b4fb5010d9592e3a9a28e4d4736dec0e130c8ab7c2f8f71bd2","target":"record","created_at":"2026-05-18T02:44:08Z","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":"1a7a0b36056d5352d96a7a29e9c478d244305740073a996a6cae1b8641a1f011","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-03T15:07:41Z","title_canon_sha256":"18c1a2684556134354c5b11fa158fe903daf2a76a75c0a57f9f4468b7f91b00d"},"schema_version":"1.0","source":{"id":"1406.0740","kind":"arxiv","version":2}},"canonical_sha256":"b9426631a0237ca07c68ddf0fbd849a5e93267f530bd92a7e880038385f278e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9426631a0237ca07c68ddf0fbd849a5e93267f530bd92a7e880038385f278e2","first_computed_at":"2026-05-18T02:44:08.138602Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:44:08.138602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cifoIslXL34gCrTJAQUM98z/eK/F9u2QfIFyUZBXH/ORXz7jXbeXUY4rfUFEKwbC3fmoMcHmNt78V2Q8a+OTDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:44:08.139005Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.0740","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34a6b9b4ce3791b4fb5010d9592e3a9a28e4d4736dec0e130c8ab7c2f8f71bd2","sha256:2d60df79e1be45f15dd0e4023c30cebb1f577cf5960bc7dff12ff65fe311fa84"],"state_sha256":"dad7ec3cbe010fd48f3d3bda21604f916996249ff7a00952f5f41f223f6b10ed"}