{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:FTCEEBEKJPED32PY3KAC7ACAIH","short_pith_number":"pith:FTCEEBEK","schema_version":"1.0","canonical_sha256":"2cc442048a4bc83de9f8da802f804041f86dc48a40f429f831704765d2479dd9","source":{"kind":"arxiv","id":"2204.11740","version":3},"attestation_state":"computed","paper":{"title":"Robustness of the Page-Wootters construction across different pictures, states of the universe and system-clock interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Simone Rijavec","submitted_at":"2022-04-25T15:55:48Z","abstract_excerpt":"In quantum theory, the concept of time rests on shaky ground. One way to address this problem is to remove the usual background time parameter as a primitive entity and explain its emergence via correlations between physical systems. This approach was adopted by Page and Wootters (1983), who showed how time can emerge in a stationary quantum universe from the correlations between two of its subsystems, one of them acting as a clock for the other. In this work, I study the robustness of the Page-Wootters construction across different pictures, states of the universe and clock interactions, clar"},"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":"2204.11740","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-04-25T15:55:48Z","cross_cats_sorted":[],"title_canon_sha256":"07cca001977ced34f5b55df5c53202817b5cc20abd4d8788383fa26f27439848","abstract_canon_sha256":"b2a3a2d03ee57b231a38b0d2e303759b0de3df54548a0ce17c52c6c8f94830e7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:49:15.277383Z","signature_b64":"SAtmmkZdmNMMYdPzO2tN/QOHdm1qGZCNQGPVkxuFMrb9V/oosCPfsAJftZ8WYGvMFyU3sfVgc5kQMalrDUJUDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2cc442048a4bc83de9f8da802f804041f86dc48a40f429f831704765d2479dd9","last_reissued_at":"2026-07-05T06:49:15.276884Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:49:15.276884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Robustness of the Page-Wootters construction across different pictures, states of the universe and system-clock interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Simone Rijavec","submitted_at":"2022-04-25T15:55:48Z","abstract_excerpt":"In quantum theory, the concept of time rests on shaky ground. One way to address this problem is to remove the usual background time parameter as a primitive entity and explain its emergence via correlations between physical systems. This approach was adopted by Page and Wootters (1983), who showed how time can emerge in a stationary quantum universe from the correlations between two of its subsystems, one of them acting as a clock for the other. In this work, I study the robustness of the Page-Wootters construction across different pictures, states of the universe and clock interactions, clar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2204.11740","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2204.11740/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2204.11740","created_at":"2026-07-05T06:49:15.276944+00:00"},{"alias_kind":"arxiv_version","alias_value":"2204.11740v3","created_at":"2026-07-05T06:49:15.276944+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2204.11740","created_at":"2026-07-05T06:49:15.276944+00:00"},{"alias_kind":"pith_short_12","alias_value":"FTCEEBEKJPED","created_at":"2026-07-05T06:49:15.276944+00:00"},{"alias_kind":"pith_short_16","alias_value":"FTCEEBEKJPED32PY","created_at":"2026-07-05T06:49:15.276944+00:00"},{"alias_kind":"pith_short_8","alias_value":"FTCEEBEK","created_at":"2026-07-05T06:49:15.276944+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2604.21804","citing_title":"Agentic-AI Detector Co-design and Optimization in Vertically-Integrated Differentiable Full Simulations","ref_index":29,"is_internal_anchor":false},{"citing_arxiv_id":"2604.21805","citing_title":"The clock ambiguity problem: extended or extinguished?","ref_index":29,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH","json":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH.json","graph_json":"https://pith.science/api/pith-number/FTCEEBEKJPED32PY3KAC7ACAIH/graph.json","events_json":"https://pith.science/api/pith-number/FTCEEBEKJPED32PY3KAC7ACAIH/events.json","paper":"https://pith.science/paper/FTCEEBEK"},"agent_actions":{"view_html":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH","download_json":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH.json","view_paper":"https://pith.science/paper/FTCEEBEK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2204.11740&json=true","fetch_graph":"https://pith.science/api/pith-number/FTCEEBEKJPED32PY3KAC7ACAIH/graph.json","fetch_events":"https://pith.science/api/pith-number/FTCEEBEKJPED32PY3KAC7ACAIH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH/action/storage_attestation","attest_author":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH/action/author_attestation","sign_citation":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH/action/citation_signature","submit_replication":"https://pith.science/pith/FTCEEBEKJPED32PY3KAC7ACAIH/action/replication_record"}},"created_at":"2026-07-05T06:49:15.276944+00:00","updated_at":"2026-07-05T06:49:15.276944+00:00"}