{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:VX26HGL7ZWCY5VZP3DB3SQHPGM","short_pith_number":"pith:VX26HGL7","schema_version":"1.0","canonical_sha256":"adf5e3997fcd858ed72fd8c3b940ef33096c8b82c96683711c91b338c703707c","source":{"kind":"arxiv","id":"1904.11264","version":2},"attestation_state":"computed","paper":{"title":"Superpotential method for chiral cosmological models connected with modified gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"E.O. Pozdeeva, I.V. Fomin, M. Sami, S.V. Chervon, S.Yu. Vernov","submitted_at":"2019-04-25T11:28:26Z","abstract_excerpt":"We consider the Chiral Cosmological Models (CCMs) and modified gravity theories associated with them. Generalization of the superpotential method for a general CCM with several scalar fields is performed, and the method of construction CCMs admitting exact solutions is developed. New classes of exact solutions in the two-component CCM connected with an $f(R)$ gravity model with an additional scalar field have been constructed. We construct new cosmological solutions for a diagonal metric of the target space, including modified power-law solutions. In particular, we propose the reconstruction p"},"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":"1904.11264","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2019-04-25T11:28:26Z","cross_cats_sorted":["astro-ph.CO","math-ph","math.MP"],"title_canon_sha256":"269c10ff65271f66f43bd60072cc15942e9bb04a26afc049fb8c7a2fdfcfacc4","abstract_canon_sha256":"98157b9d4c3cc51afd183c3706d06a8f4053654f16bcce2c0637abfb3e047653"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:06:41.744021Z","signature_b64":"qFm52RAARA1IobzX+VUZJ2JT+AizKcORKwxMYKcw0nIwJIQU06dcsfgxa3qjwMo8UHkZMSroaRowCb1vdEPbBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"adf5e3997fcd858ed72fd8c3b940ef33096c8b82c96683711c91b338c703707c","last_reissued_at":"2026-07-05T00:06:41.743598Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:06:41.743598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Superpotential method for chiral cosmological models connected with modified gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","math-ph","math.MP"],"primary_cat":"gr-qc","authors_text":"E.O. Pozdeeva, I.V. Fomin, M. Sami, S.V. Chervon, S.Yu. Vernov","submitted_at":"2019-04-25T11:28:26Z","abstract_excerpt":"We consider the Chiral Cosmological Models (CCMs) and modified gravity theories associated with them. Generalization of the superpotential method for a general CCM with several scalar fields is performed, and the method of construction CCMs admitting exact solutions is developed. New classes of exact solutions in the two-component CCM connected with an $f(R)$ gravity model with an additional scalar field have been constructed. We construct new cosmological solutions for a diagonal metric of the target space, including modified power-law solutions. In particular, we propose the reconstruction p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11264","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/1904.11264/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":"1904.11264","created_at":"2026-07-05T00:06:41.743658+00:00"},{"alias_kind":"arxiv_version","alias_value":"1904.11264v2","created_at":"2026-07-05T00:06:41.743658+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11264","created_at":"2026-07-05T00:06:41.743658+00:00"},{"alias_kind":"pith_short_12","alias_value":"VX26HGL7ZWCY","created_at":"2026-07-05T00:06:41.743658+00:00"},{"alias_kind":"pith_short_16","alias_value":"VX26HGL7ZWCY5VZP","created_at":"2026-07-05T00:06:41.743658+00:00"},{"alias_kind":"pith_short_8","alias_value":"VX26HGL7","created_at":"2026-07-05T00:06:41.743658+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2509.21220","citing_title":"Primordial black holes formation in inflationary $F(R)$ models with scalar fields","ref_index":35,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM","json":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM.json","graph_json":"https://pith.science/api/pith-number/VX26HGL7ZWCY5VZP3DB3SQHPGM/graph.json","events_json":"https://pith.science/api/pith-number/VX26HGL7ZWCY5VZP3DB3SQHPGM/events.json","paper":"https://pith.science/paper/VX26HGL7"},"agent_actions":{"view_html":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM","download_json":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM.json","view_paper":"https://pith.science/paper/VX26HGL7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1904.11264&json=true","fetch_graph":"https://pith.science/api/pith-number/VX26HGL7ZWCY5VZP3DB3SQHPGM/graph.json","fetch_events":"https://pith.science/api/pith-number/VX26HGL7ZWCY5VZP3DB3SQHPGM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM/action/storage_attestation","attest_author":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM/action/author_attestation","sign_citation":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM/action/citation_signature","submit_replication":"https://pith.science/pith/VX26HGL7ZWCY5VZP3DB3SQHPGM/action/replication_record"}},"created_at":"2026-07-05T00:06:41.743658+00:00","updated_at":"2026-07-05T00:06:41.743658+00:00"}