{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:Q7C6655HVLRUJ7OMR7XXVQEBGZ","short_pith_number":"pith:Q7C6655H","schema_version":"1.0","canonical_sha256":"87c5ef77a7aae344fdcc8fef7ac08136652d07b12ed1ea6281d1955f7dd6ba50","source":{"kind":"arxiv","id":"2112.01300","version":2},"attestation_state":"computed","paper":{"title":"Entanglement and scattering in quantum electrodynamics: S-matrix information from an entangled spectator particle","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"quant-ph","authors_text":"B. Hiller, I. G. da Paz, J. B. Araujo, Juan D. Fonseca, Marcos Sampaio","submitted_at":"2021-12-02T14:51:45Z","abstract_excerpt":"We consider a general quantum field relativistic scattering involving two half spin fermions, $A$ and $B$, which are initially entangled with another fermion $C$ that does not participate in the scattering dynamics. We construct general expressions for the reduced spin matrices for the out-state considering a general tripartite spin-entangled state. In particular we study an inelastic QED process at tree-level, namely $e^-e^+\\rightarrow \\mu^- \\mu^+$ and a half spin fermion $C$ as an spectator particle which can be entangled to the $AB$ system in the following ways: W state, GHZ state, $|\\text{"},"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":"2112.01300","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-02T14:51:45Z","cross_cats_sorted":["hep-ph","hep-th"],"title_canon_sha256":"924271dabe6b60738706882ffe0039c84af0d5bc4274ac070593005266108def","abstract_canon_sha256":"ea3882e93f019051d0dfbe7ccb4bc58a6e16b37124df427b7b33aa3811cbd896"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:03:20.410938Z","signature_b64":"usC7uGl1bACn4vA+H1hKDh+m4cvLgJUdWUdhK/hKdEC59HALpqC4IszWL4MVU6JaV35hP+1ujlj9jJe3VYcTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87c5ef77a7aae344fdcc8fef7ac08136652d07b12ed1ea6281d1955f7dd6ba50","last_reissued_at":"2026-07-05T05:03:20.410449Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:03:20.410449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Entanglement and scattering in quantum electrodynamics: S-matrix information from an entangled spectator particle","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ph","hep-th"],"primary_cat":"quant-ph","authors_text":"B. Hiller, I. G. da Paz, J. B. Araujo, Juan D. Fonseca, Marcos Sampaio","submitted_at":"2021-12-02T14:51:45Z","abstract_excerpt":"We consider a general quantum field relativistic scattering involving two half spin fermions, $A$ and $B$, which are initially entangled with another fermion $C$ that does not participate in the scattering dynamics. We construct general expressions for the reduced spin matrices for the out-state considering a general tripartite spin-entangled state. In particular we study an inelastic QED process at tree-level, namely $e^-e^+\\rightarrow \\mu^- \\mu^+$ and a half spin fermion $C$ as an spectator particle which can be entangled to the $AB$ system in the following ways: W state, GHZ state, $|\\text{"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.01300","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/2112.01300/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":"2112.01300","created_at":"2026-07-05T05:03:20.410512+00:00"},{"alias_kind":"arxiv_version","alias_value":"2112.01300v2","created_at":"2026-07-05T05:03:20.410512+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.01300","created_at":"2026-07-05T05:03:20.410512+00:00"},{"alias_kind":"pith_short_12","alias_value":"Q7C6655HVLRU","created_at":"2026-07-05T05:03:20.410512+00:00"},{"alias_kind":"pith_short_16","alias_value":"Q7C6655HVLRUJ7OM","created_at":"2026-07-05T05:03:20.410512+00:00"},{"alias_kind":"pith_short_8","alias_value":"Q7C6655H","created_at":"2026-07-05T05:03:20.410512+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":3,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.30825","citing_title":"Regularized Compton double scattering via unitarity","ref_index":17,"is_internal_anchor":false},{"citing_arxiv_id":"2510.04200","citing_title":"Qubit entanglement from forward scattering","ref_index":57,"is_internal_anchor":false},{"citing_arxiv_id":"2605.06907","citing_title":"A collider as a quantum computer","ref_index":26,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ","json":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ.json","graph_json":"https://pith.science/api/pith-number/Q7C6655HVLRUJ7OMR7XXVQEBGZ/graph.json","events_json":"https://pith.science/api/pith-number/Q7C6655HVLRUJ7OMR7XXVQEBGZ/events.json","paper":"https://pith.science/paper/Q7C6655H"},"agent_actions":{"view_html":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ","download_json":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ.json","view_paper":"https://pith.science/paper/Q7C6655H","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2112.01300&json=true","fetch_graph":"https://pith.science/api/pith-number/Q7C6655HVLRUJ7OMR7XXVQEBGZ/graph.json","fetch_events":"https://pith.science/api/pith-number/Q7C6655HVLRUJ7OMR7XXVQEBGZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ/action/storage_attestation","attest_author":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ/action/author_attestation","sign_citation":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ/action/citation_signature","submit_replication":"https://pith.science/pith/Q7C6655HVLRUJ7OMR7XXVQEBGZ/action/replication_record"}},"created_at":"2026-07-05T05:03:20.410512+00:00","updated_at":"2026-07-05T05:03:20.410512+00:00"}