{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:YKAQXUTVM7WRG4M3JZGID3MDYV","short_pith_number":"pith:YKAQXUTV","schema_version":"1.0","canonical_sha256":"c2810bd27567ed13719b4e4c81ed83c5766a63475fbefa18e3c292554629ae3e","source":{"kind":"arxiv","id":"2008.08578","version":1},"attestation_state":"computed","paper":{"title":"Loop spin effects in intense background fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Anton Ilderton, Ben King, Suo Tang","submitted_at":"2020-08-19T17:59:08Z","abstract_excerpt":"Radiative and non-radiative electron spin flip probabilities are analysed in both plane wave and focussed laser backgrounds. We provide a simple and physically transparent description of spin dynamics in plane waves, and demonstrate that there exists a kinematic regime in which the usual leading order perturbative hierarchy of QED is reversed, and non-radiative loop effects dominate over radiative tree-level spin-flips. We show that while this loop-dominance becomes suppressed in focussed laser pulses due to a high sensitivity to field geometry, there is nevertheless a regime in which, in prin"},"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":"2008.08578","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-08-19T17:59:08Z","cross_cats_sorted":[],"title_canon_sha256":"9a320b63cba7d9eabd3e1508b24d98aa5805510d728e695aad351170ae223b72","abstract_canon_sha256":"167201137301fa62e9508dd53d411cc41b90cbcd8204668831598ebebe37ba67"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:47:03.066381Z","signature_b64":"IYMDOL7kD/KwUPbqqv7sVOx+o5URNZq21BAY6JFTH6+Kd75aA1mfKQz6/fqXFofqFpAakc9d70iUImSWtHMnDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c2810bd27567ed13719b4e4c81ed83c5766a63475fbefa18e3c292554629ae3e","last_reissued_at":"2026-07-05T01:47:03.065907Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:47:03.065907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Loop spin effects in intense background fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Anton Ilderton, Ben King, Suo Tang","submitted_at":"2020-08-19T17:59:08Z","abstract_excerpt":"Radiative and non-radiative electron spin flip probabilities are analysed in both plane wave and focussed laser backgrounds. We provide a simple and physically transparent description of spin dynamics in plane waves, and demonstrate that there exists a kinematic regime in which the usual leading order perturbative hierarchy of QED is reversed, and non-radiative loop effects dominate over radiative tree-level spin-flips. We show that while this loop-dominance becomes suppressed in focussed laser pulses due to a high sensitivity to field geometry, there is nevertheless a regime in which, in prin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.08578","kind":"arxiv","version":1},"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/2008.08578/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":"2008.08578","created_at":"2026-07-05T01:47:03.065964+00:00"},{"alias_kind":"arxiv_version","alias_value":"2008.08578v1","created_at":"2026-07-05T01:47:03.065964+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.08578","created_at":"2026-07-05T01:47:03.065964+00:00"},{"alias_kind":"pith_short_12","alias_value":"YKAQXUTVM7WR","created_at":"2026-07-05T01:47:03.065964+00:00"},{"alias_kind":"pith_short_16","alias_value":"YKAQXUTVM7WRG4M3","created_at":"2026-07-05T01:47:03.065964+00:00"},{"alias_kind":"pith_short_8","alias_value":"YKAQXUTV","created_at":"2026-07-05T01:47:03.065964+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/YKAQXUTVM7WRG4M3JZGID3MDYV","json":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV.json","graph_json":"https://pith.science/api/pith-number/YKAQXUTVM7WRG4M3JZGID3MDYV/graph.json","events_json":"https://pith.science/api/pith-number/YKAQXUTVM7WRG4M3JZGID3MDYV/events.json","paper":"https://pith.science/paper/YKAQXUTV"},"agent_actions":{"view_html":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV","download_json":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV.json","view_paper":"https://pith.science/paper/YKAQXUTV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2008.08578&json=true","fetch_graph":"https://pith.science/api/pith-number/YKAQXUTVM7WRG4M3JZGID3MDYV/graph.json","fetch_events":"https://pith.science/api/pith-number/YKAQXUTVM7WRG4M3JZGID3MDYV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV/action/storage_attestation","attest_author":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV/action/author_attestation","sign_citation":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV/action/citation_signature","submit_replication":"https://pith.science/pith/YKAQXUTVM7WRG4M3JZGID3MDYV/action/replication_record"}},"created_at":"2026-07-05T01:47:03.065964+00:00","updated_at":"2026-07-05T01:47:03.065964+00:00"}