{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:YREUSWBGVW6FSW4FY7ZJMWIT5X","short_pith_number":"pith:YREUSWBG","schema_version":"1.0","canonical_sha256":"c449495826adbc595b85c7f2965913edf86758bee784e5f6c1242d3f70a41aab","source":{"kind":"arxiv","id":"2104.04499","version":4},"attestation_state":"computed","paper":{"title":"Local photons","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"quant-ph","authors_text":"Almut Beige, Daniel Hodgson, Jake Southall, Robert Purdy","submitted_at":"2021-04-09T17:33:03Z","abstract_excerpt":"The classical free-space solutions of Maxwell's equations for light propagation in one dimension include wave packets of any shape that travel at the speed of light. This includes highly-localised wave packets that remain localised at all times. Motivated by this observation, this paper builds on recent work by Southall et al. [J. Mod. Opt. 68, 647 (2021)] and shows that a local description of the quantised electromagnetic field, which supports such solutions and which must overcome several no-go theorems, is indeed possible. Starting from the assumption that the basic building blocks of photo"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2104.04499","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-04-09T17:33:03Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"acfe39792e084bcbc6c788a3a0d0806c43fad20ad09c6ea94d9cab53294756f8","abstract_canon_sha256":"a721dac604ed9c58afd292fc85ec9757e6758ec4e8f5e5b7d0c725445383777e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:58:00.596761Z","signature_b64":"Ih5/e/VCB2fd+9LMzAfl/Tk0bbaVf7I5mUTIQ52O0hgEOud53g3foiAuPSY/kF8A422PCf1ii+S+lZL0bH+TBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c449495826adbc595b85c7f2965913edf86758bee784e5f6c1242d3f70a41aab","last_reissued_at":"2026-07-05T04:58:00.596404Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:58:00.596404Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Local photons","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"quant-ph","authors_text":"Almut Beige, Daniel Hodgson, Jake Southall, Robert Purdy","submitted_at":"2021-04-09T17:33:03Z","abstract_excerpt":"The classical free-space solutions of Maxwell's equations for light propagation in one dimension include wave packets of any shape that travel at the speed of light. This includes highly-localised wave packets that remain localised at all times. Motivated by this observation, this paper builds on recent work by Southall et al. [J. Mod. Opt. 68, 647 (2021)] and shows that a local description of the quantised electromagnetic field, which supports such solutions and which must overcome several no-go theorems, is indeed possible. Starting from the assumption that the basic building blocks of photo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2104.04499","kind":"arxiv","version":4},"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/2104.04499/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2104.04499","created_at":"2026-07-05T04:58:00.596467+00:00"},{"alias_kind":"arxiv_version","alias_value":"2104.04499v4","created_at":"2026-07-05T04:58:00.596467+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2104.04499","created_at":"2026-07-05T04:58:00.596467+00:00"},{"alias_kind":"pith_short_12","alias_value":"YREUSWBGVW6F","created_at":"2026-07-05T04:58:00.596467+00:00"},{"alias_kind":"pith_short_16","alias_value":"YREUSWBGVW6FSW4F","created_at":"2026-07-05T04:58:00.596467+00:00"},{"alias_kind":"pith_short_8","alias_value":"YREUSWBG","created_at":"2026-07-05T04:58:00.596467+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1908.07597","citing_title":"Locally-acting mirror Hamiltonians","ref_index":28,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X","json":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X.json","graph_json":"https://pith.science/api/pith-number/YREUSWBGVW6FSW4FY7ZJMWIT5X/graph.json","events_json":"https://pith.science/api/pith-number/YREUSWBGVW6FSW4FY7ZJMWIT5X/events.json","paper":"https://pith.science/paper/YREUSWBG"},"agent_actions":{"view_html":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X","download_json":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X.json","view_paper":"https://pith.science/paper/YREUSWBG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2104.04499&json=true","fetch_graph":"https://pith.science/api/pith-number/YREUSWBGVW6FSW4FY7ZJMWIT5X/graph.json","fetch_events":"https://pith.science/api/pith-number/YREUSWBGVW6FSW4FY7ZJMWIT5X/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X/action/storage_attestation","attest_author":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X/action/author_attestation","sign_citation":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X/action/citation_signature","submit_replication":"https://pith.science/pith/YREUSWBGVW6FSW4FY7ZJMWIT5X/action/replication_record"}},"created_at":"2026-07-05T04:58:00.596467+00:00","updated_at":"2026-07-05T04:58:00.596467+00:00"}