{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:L2GORRJP7PYLLCWF6TXJIRRHQ3","short_pith_number":"pith:L2GORRJP","schema_version":"1.0","canonical_sha256":"5e8ce8c52ffbf0b58ac5f4ee94462786ef386e02d327bbcfbcc43d6ea161c9e4","source":{"kind":"arxiv","id":"1601.02950","version":1},"attestation_state":"computed","paper":{"title":"Fine-structure constant constraints on dark energy: II. Extending the parameter space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"A. Gusart, A. M. M. Pinho, C. I. S. A. Rocha, C. J. A. P. Martins, J. L\\'opez, P. Carreira","submitted_at":"2016-01-12T16:42:22Z","abstract_excerpt":"Astrophysical tests of the stability of fundamental couplings, such as the fine-structure constant $\\alpha$, are a powerful probe of new physics. Recently these measurements, combined with local atomic clock tests and Type Ia supernova and Hubble parameter data, were used to constrain the simplest class of dynamical dark energy models where the same degree of freedom is assumed to provide both the dark energy and (through a dimensionless coupling, $\\zeta$, to the electromagnetic sector) the $\\alpha$ variation. One caveat of these analyses was that it was based on fiducial models where 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":"1601.02950","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-01-12T16:42:22Z","cross_cats_sorted":["gr-qc","hep-ph","hep-th"],"title_canon_sha256":"0485da3d1c34f97c2c72f9f10ebc3286a30dd69dfc69870d7a9aa84c231364b2","abstract_canon_sha256":"a375b0064ef2a336e2d0b0a8108d32ac5b13399e7687bfbac924a9cb0b01a9c6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:59.262214Z","signature_b64":"E6sj9PuSrOq6IpdipGYQXtWZV5/WUOjetm0Ju7PsxKIiXHzYaUsMdMWoQYVLDgYkPxiArnnMZueh01Dsox/ABQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e8ce8c52ffbf0b58ac5f4ee94462786ef386e02d327bbcfbcc43d6ea161c9e4","last_reissued_at":"2026-05-18T01:22:59.261694Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:59.261694Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Fine-structure constant constraints on dark energy: II. Extending the parameter space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","hep-ph","hep-th"],"primary_cat":"astro-ph.CO","authors_text":"A. Gusart, A. M. M. Pinho, C. I. S. A. Rocha, C. J. A. P. Martins, J. L\\'opez, P. Carreira","submitted_at":"2016-01-12T16:42:22Z","abstract_excerpt":"Astrophysical tests of the stability of fundamental couplings, such as the fine-structure constant $\\alpha$, are a powerful probe of new physics. Recently these measurements, combined with local atomic clock tests and Type Ia supernova and Hubble parameter data, were used to constrain the simplest class of dynamical dark energy models where the same degree of freedom is assumed to provide both the dark energy and (through a dimensionless coupling, $\\zeta$, to the electromagnetic sector) the $\\alpha$ variation. One caveat of these analyses was that it was based on fiducial models where the dark"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.02950","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":""},"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":"1601.02950","created_at":"2026-05-18T01:22:59.261777+00:00"},{"alias_kind":"arxiv_version","alias_value":"1601.02950v1","created_at":"2026-05-18T01:22:59.261777+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.02950","created_at":"2026-05-18T01:22:59.261777+00:00"},{"alias_kind":"pith_short_12","alias_value":"L2GORRJP7PYL","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_16","alias_value":"L2GORRJP7PYLLCWF","created_at":"2026-05-18T12:30:29.479603+00:00"},{"alias_kind":"pith_short_8","alias_value":"L2GORRJP","created_at":"2026-05-18T12:30:29.479603+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3","json":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3.json","graph_json":"https://pith.science/api/pith-number/L2GORRJP7PYLLCWF6TXJIRRHQ3/graph.json","events_json":"https://pith.science/api/pith-number/L2GORRJP7PYLLCWF6TXJIRRHQ3/events.json","paper":"https://pith.science/paper/L2GORRJP"},"agent_actions":{"view_html":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3","download_json":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3.json","view_paper":"https://pith.science/paper/L2GORRJP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1601.02950&json=true","fetch_graph":"https://pith.science/api/pith-number/L2GORRJP7PYLLCWF6TXJIRRHQ3/graph.json","fetch_events":"https://pith.science/api/pith-number/L2GORRJP7PYLLCWF6TXJIRRHQ3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3/action/storage_attestation","attest_author":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3/action/author_attestation","sign_citation":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3/action/citation_signature","submit_replication":"https://pith.science/pith/L2GORRJP7PYLLCWF6TXJIRRHQ3/action/replication_record"}},"created_at":"2026-05-18T01:22:59.261777+00:00","updated_at":"2026-05-18T01:22:59.261777+00:00"}