{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:ICNW23SBS6HBJLDHLK6A2DRSX2","short_pith_number":"pith:ICNW23SB","schema_version":"1.0","canonical_sha256":"409b6d6e41978e14ac675abc0d0e32bead37afcb547d45cc3b14a0ff08fd63df","source":{"kind":"arxiv","id":"1008.0283","version":4},"attestation_state":"computed","paper":{"title":"Classical system boundaries cannot be determined within quantum Darwinism","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chris Fields","submitted_at":"2010-08-02T12:00:43Z","abstract_excerpt":"Multiple observers who interact with environmental encodings of the states of a macroscopic quantum system S as required by quantum Darwinism cannot demonstrate that they are jointly observing S without a joint a priori assumption of a classical boundary separating S from its environment E. Quantum Darwinism cannot, therefore, be regarded as providing a purely quantum-mechanical explanation of the \"emergence\" of classicality."},"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":"1008.0283","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-02T12:00:43Z","cross_cats_sorted":[],"title_canon_sha256":"282f6033386c44b42c31fe5fed267dc647d357f402d9d1770ffe9876e45c9783","abstract_canon_sha256":"818c575a54055a1cc0e42a817bf11f02848310b2f476f00fef979e2697df58b2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:04:06.950276Z","signature_b64":"8zfOnE7ac67jDG64Aa8WBS0aCK524sU2rFNz5si5kRAFsrOIWxEtiVR+yQvi88K3KLzlL8x0s9Wab8I3IU97Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"409b6d6e41978e14ac675abc0d0e32bead37afcb547d45cc3b14a0ff08fd63df","last_reissued_at":"2026-05-18T04:04:06.949726Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:04:06.949726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Classical system boundaries cannot be determined within quantum Darwinism","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chris Fields","submitted_at":"2010-08-02T12:00:43Z","abstract_excerpt":"Multiple observers who interact with environmental encodings of the states of a macroscopic quantum system S as required by quantum Darwinism cannot demonstrate that they are jointly observing S without a joint a priori assumption of a classical boundary separating S from its environment E. Quantum Darwinism cannot, therefore, be regarded as providing a purely quantum-mechanical explanation of the \"emergence\" of classicality."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.0283","kind":"arxiv","version":4},"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":"1008.0283","created_at":"2026-05-18T04:04:06.949827+00:00"},{"alias_kind":"arxiv_version","alias_value":"1008.0283v4","created_at":"2026-05-18T04:04:06.949827+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.0283","created_at":"2026-05-18T04:04:06.949827+00:00"},{"alias_kind":"pith_short_12","alias_value":"ICNW23SBS6HB","created_at":"2026-05-18T12:26:09.077623+00:00"},{"alias_kind":"pith_short_16","alias_value":"ICNW23SBS6HBJLDH","created_at":"2026-05-18T12:26:09.077623+00:00"},{"alias_kind":"pith_short_8","alias_value":"ICNW23SB","created_at":"2026-05-18T12:26:09.077623+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/ICNW23SBS6HBJLDHLK6A2DRSX2","json":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2.json","graph_json":"https://pith.science/api/pith-number/ICNW23SBS6HBJLDHLK6A2DRSX2/graph.json","events_json":"https://pith.science/api/pith-number/ICNW23SBS6HBJLDHLK6A2DRSX2/events.json","paper":"https://pith.science/paper/ICNW23SB"},"agent_actions":{"view_html":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2","download_json":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2.json","view_paper":"https://pith.science/paper/ICNW23SB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1008.0283&json=true","fetch_graph":"https://pith.science/api/pith-number/ICNW23SBS6HBJLDHLK6A2DRSX2/graph.json","fetch_events":"https://pith.science/api/pith-number/ICNW23SBS6HBJLDHLK6A2DRSX2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2/action/storage_attestation","attest_author":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2/action/author_attestation","sign_citation":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2/action/citation_signature","submit_replication":"https://pith.science/pith/ICNW23SBS6HBJLDHLK6A2DRSX2/action/replication_record"}},"created_at":"2026-05-18T04:04:06.949827+00:00","updated_at":"2026-05-18T04:04:06.949827+00:00"}