{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2001:MJXAW37DDQ6IAVHUVB25YC5VGI","short_pith_number":"pith:MJXAW37D","schema_version":"1.0","canonical_sha256":"626e0b6fe31c3c8054f4a875dc0bb5322e563437ae4e3e50a0d1e916792ca34c","source":{"kind":"arxiv","id":"gr-qc/0101050","version":2},"attestation_state":"computed","paper":{"title":"A cosmological model in Weyl-Cartan spacetime","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Dirk Puetzfeld, Romualdo Tresguerres","submitted_at":"2001-01-15T14:05:43Z","abstract_excerpt":"We present a cosmological model for early stages of the universe on the basis of a Weyl-Cartan spacetime. In this model, torsion $T^{\\alpha}$ and nonmetricity $Q_{\\alpha \\beta}$ are proportional to the vacuum polarization. Extending earlier work of one of us (RT), we discuss the behavior of the cosmic scale factor and the Weyl 1-form in detail. We show how our model fits into the more general framework of metric-affine gravity (MAG)."},"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":"gr-qc/0101050","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"gr-qc","submitted_at":"2001-01-15T14:05:43Z","cross_cats_sorted":[],"title_canon_sha256":"d38b30b97ea7398f9ba6a50cf305c0657d43720c87c921456ed061caa0596fe1","abstract_canon_sha256":"07d5706bf4a7ee67e57d9aba343c7c4bdef4f9283faf696f80d0cd661f60ed7c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:40:35.328798Z","signature_b64":"4Vz6/nkwBvfw6rB1kHeUy9gXENmHzPLYX2Hw8uHqQy2EiwKlj9k2lVk5YnB2nCBvnnfel74FfL5VDVbr0WzyDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"626e0b6fe31c3c8054f4a875dc0bb5322e563437ae4e3e50a0d1e916792ca34c","last_reissued_at":"2026-07-04T15:40:35.328454Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:40:35.328454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A cosmological model in Weyl-Cartan spacetime","license":"","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Dirk Puetzfeld, Romualdo Tresguerres","submitted_at":"2001-01-15T14:05:43Z","abstract_excerpt":"We present a cosmological model for early stages of the universe on the basis of a Weyl-Cartan spacetime. In this model, torsion $T^{\\alpha}$ and nonmetricity $Q_{\\alpha \\beta}$ are proportional to the vacuum polarization. Extending earlier work of one of us (RT), we discuss the behavior of the cosmic scale factor and the Weyl 1-form in detail. We show how our model fits into the more general framework of metric-affine gravity (MAG)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0101050","kind":"arxiv","version":2},"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/gr-qc/0101050/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":"gr-qc/0101050","created_at":"2026-07-04T15:40:35.328511+00:00"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0101050v2","created_at":"2026-07-04T15:40:35.328511+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0101050","created_at":"2026-07-04T15:40:35.328511+00:00"},{"alias_kind":"pith_short_12","alias_value":"MJXAW37DDQ6I","created_at":"2026-07-04T15:40:35.328511+00:00"},{"alias_kind":"pith_short_16","alias_value":"MJXAW37DDQ6IAVHU","created_at":"2026-07-04T15:40:35.328511+00:00"},{"alias_kind":"pith_short_8","alias_value":"MJXAW37D","created_at":"2026-07-04T15:40:35.328511+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2411.19127","citing_title":"Friedmann cosmology with hyperfluids","ref_index":88,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI","json":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI.json","graph_json":"https://pith.science/api/pith-number/MJXAW37DDQ6IAVHUVB25YC5VGI/graph.json","events_json":"https://pith.science/api/pith-number/MJXAW37DDQ6IAVHUVB25YC5VGI/events.json","paper":"https://pith.science/paper/MJXAW37D"},"agent_actions":{"view_html":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI","download_json":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI.json","view_paper":"https://pith.science/paper/MJXAW37D","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=gr-qc/0101050&json=true","fetch_graph":"https://pith.science/api/pith-number/MJXAW37DDQ6IAVHUVB25YC5VGI/graph.json","fetch_events":"https://pith.science/api/pith-number/MJXAW37DDQ6IAVHUVB25YC5VGI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/action/storage_attestation","attest_author":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/action/author_attestation","sign_citation":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/action/citation_signature","submit_replication":"https://pith.science/pith/MJXAW37DDQ6IAVHUVB25YC5VGI/action/replication_record"}},"created_at":"2026-07-04T15:40:35.328511+00:00","updated_at":"2026-07-04T15:40:35.328511+00:00"}