{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:43ECSYLEC6EK53XWTVPR3DG2UI","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":"f6f8a883bf79196b08081a352105f850554902a0bec248fb75bab0deb4218a01","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-06-24T10:09:42Z","title_canon_sha256":"0a84337c8178230d0a73285f791a09ccb4747ebc791f57c560b044b786efe848"},"schema_version":"1.0","source":{"id":"1406.6187","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6187","created_at":"2026-05-18T02:28:47Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6187v4","created_at":"2026-05-18T02:28:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6187","created_at":"2026-05-18T02:28:47Z"},{"alias_kind":"pith_short_12","alias_value":"43ECSYLEC6EK","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"43ECSYLEC6EK53XW","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"43ECSYLE","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:bd79ed4f5266257cf38a298f67e4d57d43bf4dfd64167c5c235a484ec7ae3355","target":"graph","created_at":"2026-05-18T02:28:47Z","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":"This paper proposes a systematic study of cosmological signatures of modifications of gravity via the presence of a scalar field with a multiplicative coupling to the electromagnetic Lagrangian. We show that, in this framework, variations of the fine structure constant, violations of the distance duality relation, evolution of the cosmic microwave background (CMB) temperature and CMB distortions are intimately and unequivocally linked. This enables one to put very stringent constraints on possible violations of the distance duality relation, on the evolution of the CMB temperature and on admis","authors_text":"A. Hees, J. Larena, O. Minazzoli","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-06-24T10:09:42Z","title":"Breaking of the equivalence principle in the electromagnetic sector and its cosmological signatures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6187","kind":"arxiv","version":4},"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":"sha256:22653d4150f607b6f5a77f07b399cee3284ee77108637e80ac18dbbda433e15b","target":"record","created_at":"2026-05-18T02:28:47Z","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":"f6f8a883bf79196b08081a352105f850554902a0bec248fb75bab0deb4218a01","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-06-24T10:09:42Z","title_canon_sha256":"0a84337c8178230d0a73285f791a09ccb4747ebc791f57c560b044b786efe848"},"schema_version":"1.0","source":{"id":"1406.6187","kind":"arxiv","version":4}},"canonical_sha256":"e6c82961641788aeeef69d5f1d8cdaa21d366ec63e769de3616f35ab24d62939","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6c82961641788aeeef69d5f1d8cdaa21d366ec63e769de3616f35ab24d62939","first_computed_at":"2026-05-18T02:28:47.790849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:28:47.790849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nwQtpOI3hSCqJIYaxMPZGA3wwvzx78e2DLElaglkSQmRi9i4rL+TRVZXk+pek4IIVkEX977K64WFXq4A2pQ2DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:28:47.791246Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.6187","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22653d4150f607b6f5a77f07b399cee3284ee77108637e80ac18dbbda433e15b","sha256:bd79ed4f5266257cf38a298f67e4d57d43bf4dfd64167c5c235a484ec7ae3355"],"state_sha256":"32e672ef78b97ecb97a21b5102c4814d3cef289f2d802433d9fb5e38372c85da"}