{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:M62GJPJBWEGWA24XZPMN4B5R4H","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":"44212419ca1c41438ddd12e0381121f8d78508c94668ca2fa36b33b8d8cf52d1","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-01-22T16:29:59Z","title_canon_sha256":"0b0873f44e2ba33be394927cb75b91648b04cff8f7b7c60fcaeef4402d0047a1"},"schema_version":"1.0","source":{"id":"1401.5721","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.5721","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"arxiv_version","alias_value":"1401.5721v1","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.5721","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"pith_short_12","alias_value":"M62GJPJBWEGW","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"M62GJPJBWEGWA24X","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"M62GJPJB","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:2dbcba6a6c17aa3f3e3070fa9764b2d0edba38bc97169cda16bc84524d235774","target":"graph","created_at":"2026-05-18T01:45:17Z","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"},"paper":{"abstract_excerpt":"We provide for the first time the exact solution of Maxwell's equations for a massless charged particle moving on a generic trajectory at the speed of light. In particular we furnish explicit expressions for the vector potential and the electromagnetic field, which were both previously unknown, finding that they entail different physical features for bounded and unbounded trajectories. With respect to the standard Lienard-Wiechert field the electromagnetic field acquires singular delta-like contributions whose support and dimensionality depend crucially on whether the motion is a) linear, b) a","authors_text":"Francesco Azzurli, Kurt Lechner","cross_cats":["math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-01-22T16:29:59Z","title":"Electromagnetic fields and potentials generated by massless charged particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.5721","kind":"arxiv","version":1},"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:ef27ac71546b85b8e719b597ac7b9df49c2ac5e46b25569e7cbf69423159b6f1","target":"record","created_at":"2026-05-18T01:45:17Z","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":"44212419ca1c41438ddd12e0381121f8d78508c94668ca2fa36b33b8d8cf52d1","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2014-01-22T16:29:59Z","title_canon_sha256":"0b0873f44e2ba33be394927cb75b91648b04cff8f7b7c60fcaeef4402d0047a1"},"schema_version":"1.0","source":{"id":"1401.5721","kind":"arxiv","version":1}},"canonical_sha256":"67b464bd21b10d606b97cbd8de07b1e1f706371f66923eb9b2b6fa7b1353e3c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67b464bd21b10d606b97cbd8de07b1e1f706371f66923eb9b2b6fa7b1353e3c4","first_computed_at":"2026-05-18T01:45:17.881135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:17.881135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ibFnfrcrJ344kBXecTsCMk+GAEmcuLE6ieWpJccMgN84DL+AD26hMefZPipNVSe4Icd+qVNK0X0ZFRqQw9xZAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:17.881686Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.5721","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef27ac71546b85b8e719b597ac7b9df49c2ac5e46b25569e7cbf69423159b6f1","sha256:2dbcba6a6c17aa3f3e3070fa9764b2d0edba38bc97169cda16bc84524d235774"],"state_sha256":"2136ee6eba3ca625de5870fabecdb5a1e3c6b57df88c7736a67b79e3f502f10a"}