{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:HNKM4ORUDILGKFOOMVDHJ3B2KW","short_pith_number":"pith:HNKM4ORU","schema_version":"1.0","canonical_sha256":"3b54ce3a341a166515ce654674ec3a5590243582e6d5cf8755f531d15ca7d508","source":{"kind":"arxiv","id":"1504.07927","version":2},"attestation_state":"computed","paper":{"title":"Bouncing Universes in Scalar-Tensor Gravity Models admitting Negative Potentials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"A. A. Starobinsky, B. Boisseau, D. Polarski, H. Giacomini","submitted_at":"2015-04-29T17:03:10Z","abstract_excerpt":"We consider the possibility to produce a bouncing universe in the framework of scalar-tensor gravity models in which the scalar field potential may be negative, and even unbounded from below. We find a set of viable solutions with nonzero measure in the space of initial conditions passing a bounce, even in the presence of a radiation component, and approaching a constant gravitational coupling afterwards. Hence we have a model with a minimal modification of gravity in order to produce a bounce in the early universe with gravity tending dynamically to general relativity (GR) after the bounce."},"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":"1504.07927","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-04-29T17:03:10Z","cross_cats_sorted":["astro-ph.CO","hep-th"],"title_canon_sha256":"c1cb19cd7814f1dbe37867fb5ec6764dcfc39260071ade67153dd34e5ebb3d37","abstract_canon_sha256":"b537c9f3e284f1108ae4459bf342290cd341fc6a599d4c5bc8a3b93aeb25c72d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:53.683691Z","signature_b64":"j+Za1pv1zBYc4i83hBWbfCxBlShVVihQ45pnRw0CUpUe+92UdBjy69nOLN996mSQYesW6tIIAnj3QFS6Jpl3Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3b54ce3a341a166515ce654674ec3a5590243582e6d5cf8755f531d15ca7d508","last_reissued_at":"2026-05-18T01:36:53.683153Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:53.683153Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Bouncing Universes in Scalar-Tensor Gravity Models admitting Negative Potentials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-th"],"primary_cat":"gr-qc","authors_text":"A. A. Starobinsky, B. Boisseau, D. Polarski, H. Giacomini","submitted_at":"2015-04-29T17:03:10Z","abstract_excerpt":"We consider the possibility to produce a bouncing universe in the framework of scalar-tensor gravity models in which the scalar field potential may be negative, and even unbounded from below. We find a set of viable solutions with nonzero measure in the space of initial conditions passing a bounce, even in the presence of a radiation component, and approaching a constant gravitational coupling afterwards. Hence we have a model with a minimal modification of gravity in order to produce a bounce in the early universe with gravity tending dynamically to general relativity (GR) after the bounce."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.07927","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":""},"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":"1504.07927","created_at":"2026-05-18T01:36:53.683241+00:00"},{"alias_kind":"arxiv_version","alias_value":"1504.07927v2","created_at":"2026-05-18T01:36:53.683241+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.07927","created_at":"2026-05-18T01:36:53.683241+00:00"},{"alias_kind":"pith_short_12","alias_value":"HNKM4ORUDILG","created_at":"2026-05-18T12:29:25.134429+00:00"},{"alias_kind":"pith_short_16","alias_value":"HNKM4ORUDILGKFOO","created_at":"2026-05-18T12:29:25.134429+00:00"},{"alias_kind":"pith_short_8","alias_value":"HNKM4ORU","created_at":"2026-05-18T12:29:25.134429+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2503.14743","citing_title":"Extended Dark Energy analysis using DESI DR2 BAO measurements","ref_index":119,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW","json":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW.json","graph_json":"https://pith.science/api/pith-number/HNKM4ORUDILGKFOOMVDHJ3B2KW/graph.json","events_json":"https://pith.science/api/pith-number/HNKM4ORUDILGKFOOMVDHJ3B2KW/events.json","paper":"https://pith.science/paper/HNKM4ORU"},"agent_actions":{"view_html":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW","download_json":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW.json","view_paper":"https://pith.science/paper/HNKM4ORU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1504.07927&json=true","fetch_graph":"https://pith.science/api/pith-number/HNKM4ORUDILGKFOOMVDHJ3B2KW/graph.json","fetch_events":"https://pith.science/api/pith-number/HNKM4ORUDILGKFOOMVDHJ3B2KW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW/action/storage_attestation","attest_author":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW/action/author_attestation","sign_citation":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW/action/citation_signature","submit_replication":"https://pith.science/pith/HNKM4ORUDILGKFOOMVDHJ3B2KW/action/replication_record"}},"created_at":"2026-05-18T01:36:53.683241+00:00","updated_at":"2026-05-18T01:36:53.683241+00:00"}