{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:M7JVIOXDGIY6VJHREUE5ZEZWG5","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":"2942d21fa543f7426acd75712e2c47cf3f5cc3855928dfbf178b6fba56d873e9","cross_cats_sorted":["hep-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-05-03T18:00:01Z","title_canon_sha256":"82354d7a50b607486c31054ac52fe9962db323f7dceb881119fa5893384cc656"},"schema_version":"1.0","source":{"id":"2105.01072","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.01072","created_at":"2026-07-05T03:19:43Z"},{"alias_kind":"arxiv_version","alias_value":"2105.01072v2","created_at":"2026-07-05T03:19:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.01072","created_at":"2026-07-05T03:19:43Z"},{"alias_kind":"pith_short_12","alias_value":"M7JVIOXDGIY6","created_at":"2026-07-05T03:19:43Z"},{"alias_kind":"pith_short_16","alias_value":"M7JVIOXDGIY6VJHR","created_at":"2026-07-05T03:19:43Z"},{"alias_kind":"pith_short_8","alias_value":"M7JVIOXD","created_at":"2026-07-05T03:19:43Z"}],"graph_snapshots":[{"event_id":"sha256:a2d0844ecf84b2a02fe8fe09ede09e1ba01a4e854eac44de62c4e20de661d0db","target":"graph","created_at":"2026-07-05T03:19:43Z","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/2105.01072/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Covariant quantization of the electromagnetic field imposes the so-called gauge-fixing modification on the Lagrangian density. As a result of that, the total angular momentum operator receives at least one gauge-fixing-originated contribution, whose presence causes some confusion in the literature. The goal of this work is to discuss in detail why such a contribution, having no classical interpretation, is actually indispensable. For this purpose, we divide canonical and Belinfante-Rosenfeld total angular momentum operators into different components and study their commutation relations, their","authors_text":"Bogdan Damski","cross_cats":["hep-th","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-05-03T18:00:01Z","title":"Impact of gauge fixing on angular momentum operators of the covariantly quantized electromagnetic field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.01072","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:eef6225d9cb3ba8a183c41b7e3c70e6dfcf332bc36d674007dc187f249b017fe","target":"record","created_at":"2026-07-05T03:19:43Z","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":"2942d21fa543f7426acd75712e2c47cf3f5cc3855928dfbf178b6fba56d873e9","cross_cats_sorted":["hep-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2021-05-03T18:00:01Z","title_canon_sha256":"82354d7a50b607486c31054ac52fe9962db323f7dceb881119fa5893384cc656"},"schema_version":"1.0","source":{"id":"2105.01072","kind":"arxiv","version":2}},"canonical_sha256":"67d3543ae33231eaa4f12509dc93363749380c5c05d666b86615f0c4ff6f819d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67d3543ae33231eaa4f12509dc93363749380c5c05d666b86615f0c4ff6f819d","first_computed_at":"2026-07-05T03:19:43.403697Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:19:43.403697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+sUiBN2jtJXGdamA0zsQDSw+NkbobGjSolWoPSq8w5d2Ap3wi2Vy8D4TdftivjVuqkOD8MYXkxWi9WSP8teADQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:19:43.404141Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.01072","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eef6225d9cb3ba8a183c41b7e3c70e6dfcf332bc36d674007dc187f249b017fe","sha256:a2d0844ecf84b2a02fe8fe09ede09e1ba01a4e854eac44de62c4e20de661d0db"],"state_sha256":"c03ecaa27eaffe4663be3841b8ef45411b70856a365238e02a7dbe953437509c"}