{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:RSLVHGJVAPBZA7ZIRWTXAWUNUX","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":"98205e618baab989b3b97e8aab7a5850e990d0a38a45aada288e51df5d843a02","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-03-24T22:02:06Z","title_canon_sha256":"257beff6686fa23f6bcc9dc9bcf68255d6c1b635bd99cc412d779dc66a4f8ddc"},"schema_version":"1.0","source":{"id":"1503.07216","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.07216","created_at":"2026-05-18T01:35:16Z"},{"alias_kind":"arxiv_version","alias_value":"1503.07216v2","created_at":"2026-05-18T01:35:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.07216","created_at":"2026-05-18T01:35:16Z"},{"alias_kind":"pith_short_12","alias_value":"RSLVHGJVAPBZ","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"RSLVHGJVAPBZA7ZI","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"RSLVHGJV","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:66a4ffebc3003fccf8510db20050452705f61fccf1cdc42d968ece904b8bb7e9","target":"graph","created_at":"2026-05-18T01:35:16Z","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 present a pedagogical introduction to NRQED (non-relativistic quantum electrodynamics). NRQED is an effective field theory that describes the interaction of non-relativistic, possibly composite, spin-half particle with the electromagnetic field. We explain in detail how the NRQED Lagrangian is constructed up to and including order $1/M^2$, where $M$ is the mass of the spin-half particle. As a sample application, we derive the Thomson scattering cross section for the low energy scattering of a photon and a possibly composite spin-half particle.","authors_text":"Gil Paz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-03-24T22:02:06Z","title":"An Introduction to NRQED"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.07216","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:d35f898b4e8e1681b691a7d73feae9cee2af7f20fdb585e9b3875b714563b52b","target":"record","created_at":"2026-05-18T01:35:16Z","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":"98205e618baab989b3b97e8aab7a5850e990d0a38a45aada288e51df5d843a02","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-03-24T22:02:06Z","title_canon_sha256":"257beff6686fa23f6bcc9dc9bcf68255d6c1b635bd99cc412d779dc66a4f8ddc"},"schema_version":"1.0","source":{"id":"1503.07216","kind":"arxiv","version":2}},"canonical_sha256":"8c9753993503c3907f288da7705a8da5ef73ef1b15253cc44d2735bd5a7d37d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8c9753993503c3907f288da7705a8da5ef73ef1b15253cc44d2735bd5a7d37d6","first_computed_at":"2026-05-18T01:35:16.054785Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:16.054785Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nPwjDR2R/onzmwRHKlLNrXV4j4m6Mfdvs+fW/EPPH2XEbpQL8OGhN9wVUEloGE33ocAS9KqKvioaBZDZ4e6hBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:16.055308Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.07216","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d35f898b4e8e1681b691a7d73feae9cee2af7f20fdb585e9b3875b714563b52b","sha256:66a4ffebc3003fccf8510db20050452705f61fccf1cdc42d968ece904b8bb7e9"],"state_sha256":"7cfc68d1c7f2904de7c3bbfd37bf49f192e40245fd79c35c80b0f995d280aea8"}