{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:4UUWSHIJ52C3CPTLCM3PUJUZNF","short_pith_number":"pith:4UUWSHIJ","schema_version":"1.0","canonical_sha256":"e529691d09ee85b13e6b1336fa2699696ea4558f82a52b2112c55ee0fc5501c0","source":{"kind":"arxiv","id":"astro-ph/0205187","version":1},"attestation_state":"computed","paper":{"title":"Predictions and Observations in Theories with Varying Couplings","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph","authors_text":"C. Armendariz-Picon","submitted_at":"2002-05-13T19:00:49Z","abstract_excerpt":"We consider a toy universe containing conventional matter and an additional real scalar field, and discuss how the requirements of gauge and diffeomorphism invariance essentially single out a particular set of theories which might describe such a world at low energies. In these theories, fermion masses and g-factors, as well as the electromagnetic coupling turn to be scalar field dependent; fermion charges and the gravitational coupling might be assumed to be constant. We then proceed to study the impact of a time variation of the scalar field on measurements of atomic spectra at high redshift"},"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":"astro-ph/0205187","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-05-13T19:00:49Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"5d5fec2e1d67c0157d27dac5e1a7dd54db369d94ebaa461d13fe2fc3bbbe0b38","abstract_canon_sha256":"fa312a57b892dc4c1f2f119d16153af3f33582fc84638deb711b611e7cc28797"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:17:53.833426Z","signature_b64":"NLHr9O91FensW3emCoChXW1IXCLWnPNW/pcpYEjniNLFRiFQJmYo97U8A9M8M/YtpnUvAUcMEj/bOJh478CpAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e529691d09ee85b13e6b1336fa2699696ea4558f82a52b2112c55ee0fc5501c0","last_reissued_at":"2026-05-18T04:17:53.832827Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:17:53.832827Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Predictions and Observations in Theories with Varying Couplings","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph","authors_text":"C. Armendariz-Picon","submitted_at":"2002-05-13T19:00:49Z","abstract_excerpt":"We consider a toy universe containing conventional matter and an additional real scalar field, and discuss how the requirements of gauge and diffeomorphism invariance essentially single out a particular set of theories which might describe such a world at low energies. In these theories, fermion masses and g-factors, as well as the electromagnetic coupling turn to be scalar field dependent; fermion charges and the gravitational coupling might be assumed to be constant. We then proceed to study the impact of a time variation of the scalar field on measurements of atomic spectra at high redshift"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0205187","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":"astro-ph/0205187","created_at":"2026-05-18T04:17:53.832907+00:00"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0205187v1","created_at":"2026-05-18T04:17:53.832907+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0205187","created_at":"2026-05-18T04:17:53.832907+00:00"},{"alias_kind":"pith_short_12","alias_value":"4UUWSHIJ52C3","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_16","alias_value":"4UUWSHIJ52C3CPTL","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_8","alias_value":"4UUWSHIJ","created_at":"2026-05-18T12:25:50.845339+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/4UUWSHIJ52C3CPTLCM3PUJUZNF","json":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF.json","graph_json":"https://pith.science/api/pith-number/4UUWSHIJ52C3CPTLCM3PUJUZNF/graph.json","events_json":"https://pith.science/api/pith-number/4UUWSHIJ52C3CPTLCM3PUJUZNF/events.json","paper":"https://pith.science/paper/4UUWSHIJ"},"agent_actions":{"view_html":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF","download_json":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF.json","view_paper":"https://pith.science/paper/4UUWSHIJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=astro-ph/0205187&json=true","fetch_graph":"https://pith.science/api/pith-number/4UUWSHIJ52C3CPTLCM3PUJUZNF/graph.json","fetch_events":"https://pith.science/api/pith-number/4UUWSHIJ52C3CPTLCM3PUJUZNF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF/action/storage_attestation","attest_author":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF/action/author_attestation","sign_citation":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF/action/citation_signature","submit_replication":"https://pith.science/pith/4UUWSHIJ52C3CPTLCM3PUJUZNF/action/replication_record"}},"created_at":"2026-05-18T04:17:53.832907+00:00","updated_at":"2026-05-18T04:17:53.832907+00:00"}