{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:QFMRL7VHW66HUB76QMP3MVVM7T","short_pith_number":"pith:QFMRL7VH","schema_version":"1.0","canonical_sha256":"815915fea7b7bc7a07fe831fb656acfcc8bd249b8f7db6c0411e8ba7800956ed","source":{"kind":"arxiv","id":"2102.09573","version":2},"attestation_state":"computed","paper":{"title":"Harvesting Entanglement with Detectors Freely Falling into a Black Hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"quant-ph","authors_text":"Erickson Tjoa, Kensuke Gallock-Yoshimura, Robert B. Mann","submitted_at":"2021-02-18T19:00:03Z","abstract_excerpt":"We carry out the first investigation of the entanglement and mutual information harvesting protocols for detectors freely falling into a black hole. Working in $(1+1)$-dimensional Schwarzschild black hole spacetime, we consider two pointlike Unruh-DeWitt (UDW) detectors in different combinations of free-falling and static trajectories. Employing a generalization of relative velocity suitable for curved spacetimes, we find that the amount of correlations extracted from the black hole vacuum, at least outside the near-horizon regime, is largely kinematic in origin (i.e. it is mostly due to the 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":"2102.09573","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-18T19:00:03Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"4693c5eeece3c8791f07a4a160e404fa49a3b026016295f443749c11b495054d","abstract_canon_sha256":"a2eda810701a00ac78be3f434abcc3f3ad0608f9a8ee0d09562bd8d0b0149c4d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:55:11.859618Z","signature_b64":"/T6clag6oL5DYuQuNlf/Sdm2UhT2X1xFXTTDv8h2UP/XL7Rgt2M8W6M1o7aWfAZxZqUw+gYviSQ3yQQ9L26uAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"815915fea7b7bc7a07fe831fb656acfcc8bd249b8f7db6c0411e8ba7800956ed","last_reissued_at":"2026-07-05T02:55:11.859121Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:55:11.859121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Harvesting Entanglement with Detectors Freely Falling into a Black Hole","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"quant-ph","authors_text":"Erickson Tjoa, Kensuke Gallock-Yoshimura, Robert B. Mann","submitted_at":"2021-02-18T19:00:03Z","abstract_excerpt":"We carry out the first investigation of the entanglement and mutual information harvesting protocols for detectors freely falling into a black hole. Working in $(1+1)$-dimensional Schwarzschild black hole spacetime, we consider two pointlike Unruh-DeWitt (UDW) detectors in different combinations of free-falling and static trajectories. Employing a generalization of relative velocity suitable for curved spacetimes, we find that the amount of correlations extracted from the black hole vacuum, at least outside the near-horizon regime, is largely kinematic in origin (i.e. it is mostly due to the r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.09573","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/2102.09573/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":"2102.09573","created_at":"2026-07-05T02:55:11.859182+00:00"},{"alias_kind":"arxiv_version","alias_value":"2102.09573v2","created_at":"2026-07-05T02:55:11.859182+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.09573","created_at":"2026-07-05T02:55:11.859182+00:00"},{"alias_kind":"pith_short_12","alias_value":"QFMRL7VHW66H","created_at":"2026-07-05T02:55:11.859182+00:00"},{"alias_kind":"pith_short_16","alias_value":"QFMRL7VHW66HUB76","created_at":"2026-07-05T02:55:11.859182+00:00"},{"alias_kind":"pith_short_8","alias_value":"QFMRL7VH","created_at":"2026-07-05T02:55:11.859182+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2508.16469","citing_title":"Delay-Independent Stability of Nonlinear Delay Differential Equations via Isospectral Reduction","ref_index":82,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T","json":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T.json","graph_json":"https://pith.science/api/pith-number/QFMRL7VHW66HUB76QMP3MVVM7T/graph.json","events_json":"https://pith.science/api/pith-number/QFMRL7VHW66HUB76QMP3MVVM7T/events.json","paper":"https://pith.science/paper/QFMRL7VH"},"agent_actions":{"view_html":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T","download_json":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T.json","view_paper":"https://pith.science/paper/QFMRL7VH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2102.09573&json=true","fetch_graph":"https://pith.science/api/pith-number/QFMRL7VHW66HUB76QMP3MVVM7T/graph.json","fetch_events":"https://pith.science/api/pith-number/QFMRL7VHW66HUB76QMP3MVVM7T/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T/action/storage_attestation","attest_author":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T/action/author_attestation","sign_citation":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T/action/citation_signature","submit_replication":"https://pith.science/pith/QFMRL7VHW66HUB76QMP3MVVM7T/action/replication_record"}},"created_at":"2026-07-05T02:55:11.859182+00:00","updated_at":"2026-07-05T02:55:11.859182+00:00"}