{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:XGEEEJCEPIYNWQTFQ3RLI6MA62","short_pith_number":"pith:XGEEEJCE","canonical_record":{"source":{"id":"2004.13035","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-27T18:00:02Z","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"title_canon_sha256":"28e44322d0628d77fa2c243d0f07d31ec1ab601609bfa607610f7f4fae256dd0","abstract_canon_sha256":"987fa66776b44ce23b6886cf2e5e97e655b5e334537dedb2bd7e639d41ad11a3"},"schema_version":"1.0"},"canonical_sha256":"b9884224447a30db426586e2b47980f68c109e98c34f9bb090540056e1b5c375","source":{"kind":"arxiv","id":"2004.13035","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.13035","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"arxiv_version","alias_value":"2004.13035v2","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.13035","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"pith_short_12","alias_value":"XGEEEJCEPIYN","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"pith_short_16","alias_value":"XGEEEJCEPIYNWQTF","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"pith_short_8","alias_value":"XGEEEJCE","created_at":"2026-07-05T01:59:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:XGEEEJCEPIYNWQTFQ3RLI6MA62","target":"record","payload":{"canonical_record":{"source":{"id":"2004.13035","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-27T18:00:02Z","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"title_canon_sha256":"28e44322d0628d77fa2c243d0f07d31ec1ab601609bfa607610f7f4fae256dd0","abstract_canon_sha256":"987fa66776b44ce23b6886cf2e5e97e655b5e334537dedb2bd7e639d41ad11a3"},"schema_version":"1.0"},"canonical_sha256":"b9884224447a30db426586e2b47980f68c109e98c34f9bb090540056e1b5c375","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:59:55.441604Z","signature_b64":"Mixy8u1Yv2ssw4iY9FVHAjlNsbDhb/IFwsmGsLs1vLtC4ACBnD86L3m2bGcSg0jklv9E9Mrmxaq5MoCR0a/jDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9884224447a30db426586e2b47980f68c109e98c34f9bb090540056e1b5c375","last_reissued_at":"2026-07-05T01:59:55.441126Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:59:55.441126Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.13035","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:59:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yHUvYSesYDcN0L9dS9scBm98pJ1mZdzNPq8TpljDfFqSkB+q839ezhXhrFyMgA7YzYv0Oztl8z3WdCfviUjAAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T14:43:47.653604Z"},"content_sha256":"50b8c8b3d797ed763d1477b8f2f218195df352deadaec898ca5fcf4a23191db4","schema_version":"1.0","event_id":"sha256:50b8c8b3d797ed763d1477b8f2f218195df352deadaec898ca5fcf4a23191db4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:XGEEEJCEPIYNWQTFQ3RLI6MA62","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The locally monochromatic approximation to QED in intense laser fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics","physics.plasm-ph"],"primary_cat":"hep-ph","authors_text":"A. J. MacLeod, B. King, T. Heinzl","submitted_at":"2020-04-27T18:00:02Z","abstract_excerpt":"We derive an approximation to QED effects in strong background fields which can be employed to improve numerical simulations of laser-particle collisions. Treating the laser as a plane wave of arbitrary intensity, we split the wave into fast (carrier) and slow (envelope) modes. We solve the interaction dynamics exactly for the former while performing a local expansion in the latter. This yields a `locally monochromatic' approximation (LMA), which we compare with exact spectra for nonlinear Compton scattering and nonlinear Breit-Wheeler pair production, for realistic laser pulse durations. We s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.13035","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/2004.13035/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:59:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZtXj5uts3xloo8aJSz48vlTRq6tQY0XNZ8ongtn59B4ZtokrjoijXtvGHgI8fjm4bNn6dh26e0iG7HDKRHW2Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T14:43:47.654427Z"},"content_sha256":"fab83e2f08c983b2ac7c6919fe972976c539ba0c9a9b20d946355062ec0f1d0d","schema_version":"1.0","event_id":"sha256:fab83e2f08c983b2ac7c6919fe972976c539ba0c9a9b20d946355062ec0f1d0d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XGEEEJCEPIYNWQTFQ3RLI6MA62/bundle.json","state_url":"https://pith.science/pith/XGEEEJCEPIYNWQTFQ3RLI6MA62/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XGEEEJCEPIYNWQTFQ3RLI6MA62/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-15T14:43:47Z","links":{"resolver":"https://pith.science/pith/XGEEEJCEPIYNWQTFQ3RLI6MA62","bundle":"https://pith.science/pith/XGEEEJCEPIYNWQTFQ3RLI6MA62/bundle.json","state":"https://pith.science/pith/XGEEEJCEPIYNWQTFQ3RLI6MA62/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XGEEEJCEPIYNWQTFQ3RLI6MA62/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XGEEEJCEPIYNWQTFQ3RLI6MA62","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"987fa66776b44ce23b6886cf2e5e97e655b5e334537dedb2bd7e639d41ad11a3","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-27T18:00:02Z","title_canon_sha256":"28e44322d0628d77fa2c243d0f07d31ec1ab601609bfa607610f7f4fae256dd0"},"schema_version":"1.0","source":{"id":"2004.13035","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.13035","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"arxiv_version","alias_value":"2004.13035v2","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.13035","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"pith_short_12","alias_value":"XGEEEJCEPIYN","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"pith_short_16","alias_value":"XGEEEJCEPIYNWQTF","created_at":"2026-07-05T01:59:55Z"},{"alias_kind":"pith_short_8","alias_value":"XGEEEJCE","created_at":"2026-07-05T01:59:55Z"}],"graph_snapshots":[{"event_id":"sha256:fab83e2f08c983b2ac7c6919fe972976c539ba0c9a9b20d946355062ec0f1d0d","target":"graph","created_at":"2026-07-05T01:59:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2004.13035/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We derive an approximation to QED effects in strong background fields which can be employed to improve numerical simulations of laser-particle collisions. Treating the laser as a plane wave of arbitrary intensity, we split the wave into fast (carrier) and slow (envelope) modes. We solve the interaction dynamics exactly for the former while performing a local expansion in the latter. This yields a `locally monochromatic' approximation (LMA), which we compare with exact spectra for nonlinear Compton scattering and nonlinear Breit-Wheeler pair production, for realistic laser pulse durations. We s","authors_text":"A. J. MacLeod, B. King, T. Heinzl","cross_cats":["physics.optics","physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-27T18:00:02Z","title":"The locally monochromatic approximation to QED in intense laser fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.13035","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:50b8c8b3d797ed763d1477b8f2f218195df352deadaec898ca5fcf4a23191db4","target":"record","created_at":"2026-07-05T01:59:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"987fa66776b44ce23b6886cf2e5e97e655b5e334537dedb2bd7e639d41ad11a3","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-04-27T18:00:02Z","title_canon_sha256":"28e44322d0628d77fa2c243d0f07d31ec1ab601609bfa607610f7f4fae256dd0"},"schema_version":"1.0","source":{"id":"2004.13035","kind":"arxiv","version":2}},"canonical_sha256":"b9884224447a30db426586e2b47980f68c109e98c34f9bb090540056e1b5c375","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9884224447a30db426586e2b47980f68c109e98c34f9bb090540056e1b5c375","first_computed_at":"2026-07-05T01:59:55.441126Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:59:55.441126Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mixy8u1Yv2ssw4iY9FVHAjlNsbDhb/IFwsmGsLs1vLtC4ACBnD86L3m2bGcSg0jklv9E9Mrmxaq5MoCR0a/jDA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:59:55.441604Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.13035","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50b8c8b3d797ed763d1477b8f2f218195df352deadaec898ca5fcf4a23191db4","sha256:fab83e2f08c983b2ac7c6919fe972976c539ba0c9a9b20d946355062ec0f1d0d"],"state_sha256":"fc8a33d75fca0ad739ae846c19b7f33dbef5b4bcfd06ea1ed2509a9f8a92e7a6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dj6hKjuSCb05ZZIlMqc5DjN0rhvdAb1+uW/aWbMSMu9KmCGeS2h+JLY8AHsqSC8HA2YbMhvDBCt0G9/IF72zBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T14:43:47.658514Z","bundle_sha256":"fed383e52459818b309aab9abeb485ac68fdefcd7eb89b901daf3d9af0876806"}}