{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7AXTHPEV7FWDMXAOXSG4JZ2H7C","short_pith_number":"pith:7AXTHPEV","canonical_record":{"source":{"id":"1711.04127","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-11-11T12:39:22Z","cross_cats_sorted":[],"title_canon_sha256":"54b7192afa3f1dcd64226aac7bd492cabdaef1de9c8c59b7a1a9617cde7409e7","abstract_canon_sha256":"13c093cecfdba8283d7ca260a112ddddf3defaf511c60bd90d1a7acf566ee40e"},"schema_version":"1.0"},"canonical_sha256":"f82f33bc95f96c365c0ebc8dc4e747f8a3b1dc38e914b4965850d4db0861509a","source":{"kind":"arxiv","id":"1711.04127","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.04127","created_at":"2026-05-18T00:27:18Z"},{"alias_kind":"arxiv_version","alias_value":"1711.04127v2","created_at":"2026-05-18T00:27:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.04127","created_at":"2026-05-18T00:27:18Z"},{"alias_kind":"pith_short_12","alias_value":"7AXTHPEV7FWD","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"7AXTHPEV7FWDMXAO","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"7AXTHPEV","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7AXTHPEV7FWDMXAOXSG4JZ2H7C","target":"record","payload":{"canonical_record":{"source":{"id":"1711.04127","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-11-11T12:39:22Z","cross_cats_sorted":[],"title_canon_sha256":"54b7192afa3f1dcd64226aac7bd492cabdaef1de9c8c59b7a1a9617cde7409e7","abstract_canon_sha256":"13c093cecfdba8283d7ca260a112ddddf3defaf511c60bd90d1a7acf566ee40e"},"schema_version":"1.0"},"canonical_sha256":"f82f33bc95f96c365c0ebc8dc4e747f8a3b1dc38e914b4965850d4db0861509a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:18.086793Z","signature_b64":"15vRAU2SC0HBSpMhzKomm9+KXi+NWOTzh1tt6t2zjPU9VnIUXB1f+BxQUj1/EQhdIsmM/h+cr5dwsdvJL/jwCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f82f33bc95f96c365c0ebc8dc4e747f8a3b1dc38e914b4965850d4db0861509a","last_reissued_at":"2026-05-18T00:27:18.086303Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:18.086303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.04127","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":"2026-05-18T00:27:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1mVT3GIF1iqeGrOptxcMoINsSN/pORhnULKFtjDew1op/MxaAlmoTxJuJZepCB+jcBSfQ+6cb62mazOdZ463Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:42:59.813371Z"},"content_sha256":"2732af238a75b3ca5d1a3ecbe4abc81511c3f96745ca52cb9c82ae95b71b94b5","schema_version":"1.0","event_id":"sha256:2732af238a75b3ca5d1a3ecbe4abc81511c3f96745ca52cb9c82ae95b71b94b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7AXTHPEV7FWDMXAOXSG4JZ2H7C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Behaviour of Charged Spinning Massless Particles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Bruno Neves, Ivan Morales, Olivier Piguet, Zui Oporto","submitted_at":"2017-11-11T12:39:22Z","abstract_excerpt":"We revisit the classical theory of a relativistic massless charged point particle with spin and interacting with an external electromagnetic field. In particular, we give a proper definition of its kinetic energy and its total energy, the latter being conserved when the external field is stationary. We also write the conservation laws for the linear and angular momenta. Finally, we find that the particle's velocity may differ from $c$ as a result of the spin---electromagnetic field interaction, without jeopardizing Lorentz invariance."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.04127","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":""},"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":"2026-05-18T00:27:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tvCTi9ILazijcHtrWaryDrVh4lRaW6uxDen9u9nG/sDeVLydRNJV+TkLLQ2mlnZ68m6ouB/jNLsIl2SrwEWrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:42:59.813951Z"},"content_sha256":"e04e11d3aad1db622820d101de675697b65a3ebfabd3b8e6e80f51618a75b661","schema_version":"1.0","event_id":"sha256:e04e11d3aad1db622820d101de675697b65a3ebfabd3b8e6e80f51618a75b661"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7AXTHPEV7FWDMXAOXSG4JZ2H7C/bundle.json","state_url":"https://pith.science/pith/7AXTHPEV7FWDMXAOXSG4JZ2H7C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7AXTHPEV7FWDMXAOXSG4JZ2H7C/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":"2026-07-05T15:42:59Z","links":{"resolver":"https://pith.science/pith/7AXTHPEV7FWDMXAOXSG4JZ2H7C","bundle":"https://pith.science/pith/7AXTHPEV7FWDMXAOXSG4JZ2H7C/bundle.json","state":"https://pith.science/pith/7AXTHPEV7FWDMXAOXSG4JZ2H7C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7AXTHPEV7FWDMXAOXSG4JZ2H7C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7AXTHPEV7FWDMXAOXSG4JZ2H7C","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":"13c093cecfdba8283d7ca260a112ddddf3defaf511c60bd90d1a7acf566ee40e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-11-11T12:39:22Z","title_canon_sha256":"54b7192afa3f1dcd64226aac7bd492cabdaef1de9c8c59b7a1a9617cde7409e7"},"schema_version":"1.0","source":{"id":"1711.04127","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.04127","created_at":"2026-05-18T00:27:18Z"},{"alias_kind":"arxiv_version","alias_value":"1711.04127v2","created_at":"2026-05-18T00:27:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.04127","created_at":"2026-05-18T00:27:18Z"},{"alias_kind":"pith_short_12","alias_value":"7AXTHPEV7FWD","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"7AXTHPEV7FWDMXAO","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"7AXTHPEV","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:e04e11d3aad1db622820d101de675697b65a3ebfabd3b8e6e80f51618a75b661","target":"graph","created_at":"2026-05-18T00:27:18Z","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 revisit the classical theory of a relativistic massless charged point particle with spin and interacting with an external electromagnetic field. In particular, we give a proper definition of its kinetic energy and its total energy, the latter being conserved when the external field is stationary. We also write the conservation laws for the linear and angular momenta. Finally, we find that the particle's velocity may differ from $c$ as a result of the spin---electromagnetic field interaction, without jeopardizing Lorentz invariance.","authors_text":"Bruno Neves, Ivan Morales, Olivier Piguet, Zui Oporto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-11-11T12:39:22Z","title":"Behaviour of Charged Spinning Massless Particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.04127","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":"sha256:2732af238a75b3ca5d1a3ecbe4abc81511c3f96745ca52cb9c82ae95b71b94b5","target":"record","created_at":"2026-05-18T00:27:18Z","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":"13c093cecfdba8283d7ca260a112ddddf3defaf511c60bd90d1a7acf566ee40e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-11-11T12:39:22Z","title_canon_sha256":"54b7192afa3f1dcd64226aac7bd492cabdaef1de9c8c59b7a1a9617cde7409e7"},"schema_version":"1.0","source":{"id":"1711.04127","kind":"arxiv","version":2}},"canonical_sha256":"f82f33bc95f96c365c0ebc8dc4e747f8a3b1dc38e914b4965850d4db0861509a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f82f33bc95f96c365c0ebc8dc4e747f8a3b1dc38e914b4965850d4db0861509a","first_computed_at":"2026-05-18T00:27:18.086303Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:18.086303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"15vRAU2SC0HBSpMhzKomm9+KXi+NWOTzh1tt6t2zjPU9VnIUXB1f+BxQUj1/EQhdIsmM/h+cr5dwsdvJL/jwCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:18.086793Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.04127","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2732af238a75b3ca5d1a3ecbe4abc81511c3f96745ca52cb9c82ae95b71b94b5","sha256:e04e11d3aad1db622820d101de675697b65a3ebfabd3b8e6e80f51618a75b661"],"state_sha256":"11ccd8ef055c58897909324603417cfa48fafa57d6f9b1fd30aff5c1be3d7312"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p2EOMhFc+vs2GY8BT6vSrcoHBYqlo5ozGsVIobNLFiNDrSHB3yT5sWD9F0cbgUxfUHuAKUizlUYdw921Mgw4Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T15:42:59.816758Z","bundle_sha256":"ec844d97c080a27e3b09e8a0255e58c6f3dfcfeae1e7f4c624668ed5ffea43ad"}}