{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:USFDEZPEZ2WEG2NOO5MNL7ZBPC","short_pith_number":"pith:USFDEZPE","schema_version":"1.0","canonical_sha256":"a48a3265e4ceac4369ae7758d5ff21788f9aca651f367d6479cac3a37d18c03e","source":{"kind":"arxiv","id":"1908.06363","version":2},"attestation_state":"computed","paper":{"title":"The Particle and Energy Cost of Entanglement of Hawking Radiation with the Final Vacuum State","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Robert M. Wald","submitted_at":"2019-08-18T02:03:21Z","abstract_excerpt":"A semiclassical analysis shows that in the process of black hole formation and evaporation, an initial pure state will evolve to a mixed state, i.e., information will be lost. One way of avoiding this conclusion without invoking drastic modifications of the local laws of physics in a low curvature regime would be for the information to be restored at the very end of the evaporation process. It is normally envisioned that this would require a final burst of particles entangled with the early time Hawking radiation. This would imply the emission of an extremely large number of particles from an "},"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":"1908.06363","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-08-18T02:03:21Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"63f349fe0a02a97db373b5eb51e137c423f1365fd8716785e3b6359d9c166e5a","abstract_canon_sha256":"c6ce8e507d7a680df16b24323e25dcc8168fffd7410bf982bc6980f9da65a631"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:07:37.267130Z","signature_b64":"AitgB/WN4CrA4zUF5eAhOozF7Ce3ROJAIbBZRNTpKL3qPV6+d5qlXFUVLmr3GDZOicAiXYXv5TwU+wBxrqRqCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a48a3265e4ceac4369ae7758d5ff21788f9aca651f367d6479cac3a37d18c03e","last_reissued_at":"2026-07-05T00:07:37.266660Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:07:37.266660Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Particle and Energy Cost of Entanglement of Hawking Radiation with the Final Vacuum State","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Robert M. Wald","submitted_at":"2019-08-18T02:03:21Z","abstract_excerpt":"A semiclassical analysis shows that in the process of black hole formation and evaporation, an initial pure state will evolve to a mixed state, i.e., information will be lost. One way of avoiding this conclusion without invoking drastic modifications of the local laws of physics in a low curvature regime would be for the information to be restored at the very end of the evaporation process. It is normally envisioned that this would require a final burst of particles entangled with the early time Hawking radiation. This would imply the emission of an extremely large number of particles from an "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.06363","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.06363/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":"1908.06363","created_at":"2026-07-05T00:07:37.266719+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.06363v2","created_at":"2026-07-05T00:07:37.266719+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.06363","created_at":"2026-07-05T00:07:37.266719+00:00"},{"alias_kind":"pith_short_12","alias_value":"USFDEZPEZ2WE","created_at":"2026-07-05T00:07:37.266719+00:00"},{"alias_kind":"pith_short_16","alias_value":"USFDEZPEZ2WEG2NO","created_at":"2026-07-05T00:07:37.266719+00:00"},{"alias_kind":"pith_short_8","alias_value":"USFDEZPE","created_at":"2026-07-05T00:07:37.266719+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/USFDEZPEZ2WEG2NOO5MNL7ZBPC","json":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC.json","graph_json":"https://pith.science/api/pith-number/USFDEZPEZ2WEG2NOO5MNL7ZBPC/graph.json","events_json":"https://pith.science/api/pith-number/USFDEZPEZ2WEG2NOO5MNL7ZBPC/events.json","paper":"https://pith.science/paper/USFDEZPE"},"agent_actions":{"view_html":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC","download_json":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC.json","view_paper":"https://pith.science/paper/USFDEZPE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.06363&json=true","fetch_graph":"https://pith.science/api/pith-number/USFDEZPEZ2WEG2NOO5MNL7ZBPC/graph.json","fetch_events":"https://pith.science/api/pith-number/USFDEZPEZ2WEG2NOO5MNL7ZBPC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC/action/storage_attestation","attest_author":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC/action/author_attestation","sign_citation":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC/action/citation_signature","submit_replication":"https://pith.science/pith/USFDEZPEZ2WEG2NOO5MNL7ZBPC/action/replication_record"}},"created_at":"2026-07-05T00:07:37.266719+00:00","updated_at":"2026-07-05T00:07:37.266719+00:00"}