{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:MJTCW5XDZUHBMJ3OET6OHMDAVM","short_pith_number":"pith:MJTCW5XD","schema_version":"1.0","canonical_sha256":"62662b76e3cd0e16276e24fce3b060ab1308174386e51e2eba6bf8582813d86f","source":{"kind":"arxiv","id":"2409.12115","version":1},"attestation_state":"computed","paper":{"title":"Revisiting Dark Photon Constraints from CMB Spectral Distortions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Bryce Cyr, Jens Chluba, Matthew C. Johnson","submitted_at":"2024-09-18T16:37:04Z","abstract_excerpt":"Spectral distortions of the cosmic microwave background (CMB) provide stringent constraints on energy and entropy production in the post-BBN (Big Bang Nucleosynthesis) era. This has been used to constrain dark photon models with COBE/FIRAS and forecast the potential gains with future CMB spectrometers. Here, we revisit these constraints by carefully considering the photon to dark photon conversion process and evolution of the distortion signal. Previous works only included the effect of CMB energy density changes but neglected the change to the photon number density. We clearly define the dark"},"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":"2409.12115","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-09-18T16:37:04Z","cross_cats_sorted":["gr-qc","hep-th"],"title_canon_sha256":"b5845148503401331edfc36c8dff3f47fe5f16523a00cb89f40d84af70164543","abstract_canon_sha256":"aa3a29eaaa6d488704dc07e6ef6b1aaedd1a0c2e43823a99c220201bc3d8df06"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:08:42.689607Z","signature_b64":"wvPB22/vgIJhWaOYAR6d5qPqqfY5/cvBECbIC+7WU9dLY8MfXCev34Z3ktEjpEiMFtP2hogfEFRtnS/DuQJzDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62662b76e3cd0e16276e24fce3b060ab1308174386e51e2eba6bf8582813d86f","last_reissued_at":"2026-07-05T09:08:42.689176Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:08:42.689176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Revisiting Dark Photon Constraints from CMB Spectral Distortions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"Bryce Cyr, Jens Chluba, Matthew C. Johnson","submitted_at":"2024-09-18T16:37:04Z","abstract_excerpt":"Spectral distortions of the cosmic microwave background (CMB) provide stringent constraints on energy and entropy production in the post-BBN (Big Bang Nucleosynthesis) era. This has been used to constrain dark photon models with COBE/FIRAS and forecast the potential gains with future CMB spectrometers. Here, we revisit these constraints by carefully considering the photon to dark photon conversion process and evolution of the distortion signal. Previous works only included the effect of CMB energy density changes but neglected the change to the photon number density. We clearly define the dark"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.12115","kind":"arxiv","version":1},"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/2409.12115/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":"2409.12115","created_at":"2026-07-05T09:08:42.689240+00:00"},{"alias_kind":"arxiv_version","alias_value":"2409.12115v1","created_at":"2026-07-05T09:08:42.689240+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.12115","created_at":"2026-07-05T09:08:42.689240+00:00"},{"alias_kind":"pith_short_12","alias_value":"MJTCW5XDZUHB","created_at":"2026-07-05T09:08:42.689240+00:00"},{"alias_kind":"pith_short_16","alias_value":"MJTCW5XDZUHBMJ3O","created_at":"2026-07-05T09:08:42.689240+00:00"},{"alias_kind":"pith_short_8","alias_value":"MJTCW5XD","created_at":"2026-07-05T09:08:42.689240+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":2,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2606.09491","citing_title":"Spectral distortion anisotropies from photon to dark photon conversions","ref_index":26,"is_internal_anchor":false},{"citing_arxiv_id":"2507.17825","citing_title":"Ultralight dark matter detection with trapped-ion interferometry","ref_index":41,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM","json":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM.json","graph_json":"https://pith.science/api/pith-number/MJTCW5XDZUHBMJ3OET6OHMDAVM/graph.json","events_json":"https://pith.science/api/pith-number/MJTCW5XDZUHBMJ3OET6OHMDAVM/events.json","paper":"https://pith.science/paper/MJTCW5XD"},"agent_actions":{"view_html":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM","download_json":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM.json","view_paper":"https://pith.science/paper/MJTCW5XD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2409.12115&json=true","fetch_graph":"https://pith.science/api/pith-number/MJTCW5XDZUHBMJ3OET6OHMDAVM/graph.json","fetch_events":"https://pith.science/api/pith-number/MJTCW5XDZUHBMJ3OET6OHMDAVM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM/action/storage_attestation","attest_author":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM/action/author_attestation","sign_citation":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM/action/citation_signature","submit_replication":"https://pith.science/pith/MJTCW5XDZUHBMJ3OET6OHMDAVM/action/replication_record"}},"created_at":"2026-07-05T09:08:42.689240+00:00","updated_at":"2026-07-05T09:08:42.689240+00:00"}