{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:PU4GSMRVTPHC5ZGF245XOAHMKH","short_pith_number":"pith:PU4GSMRV","schema_version":"1.0","canonical_sha256":"7d386932359bce2ee4c5d73b7700ec51d866e4a0872757dd5c9285d3c762bb90","source":{"kind":"arxiv","id":"1803.09247","version":3},"attestation_state":"computed","paper":{"title":"Qualitative behavior of cosmological models combining various matter fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Gauranga C. Samanta, Parth Shah, Salvatore Capozziello","submitted_at":"2018-03-25T12:59:16Z","abstract_excerpt":"The late time accelerated expansion of the universe can be realized using scalar fields with given self-interacting potentials. Here we consider a straightforward approach where a three cosmic fluid mixture is assumed. The fluids are standard matter perfect fluid, dark matter, and a scalar field with the role of dark energy. A dynamical system analysis is developed in this context. A central role is played by the equation of state $\\omega_{eff}$ which determines the acceleration phase of the models. Determining the domination of a particular fluid at certain stages of the universe history by s"},"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":"1803.09247","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-03-25T12:59:16Z","cross_cats_sorted":[],"title_canon_sha256":"52f2564aae753c31fce012db3dff0d65a2cf6732d5949df95d3b661b9b9426a8","abstract_canon_sha256":"30aa6a71ea1c798f298c4e049432a464d515c9d99b5b1023404368cfe89860b4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:02.289358Z","signature_b64":"WxVBjSJ4qRGpUO6V+m+GsayJZf7RvVdUBVyp2iI1FipsForpq4FtL/KCuspie4JuJk4Te25M6ngl2ScZIr0uBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d386932359bce2ee4c5d73b7700ec51d866e4a0872757dd5c9285d3c762bb90","last_reissued_at":"2026-05-18T00:10:02.288654Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:02.288654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Qualitative behavior of cosmological models combining various matter fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Gauranga C. Samanta, Parth Shah, Salvatore Capozziello","submitted_at":"2018-03-25T12:59:16Z","abstract_excerpt":"The late time accelerated expansion of the universe can be realized using scalar fields with given self-interacting potentials. Here we consider a straightforward approach where a three cosmic fluid mixture is assumed. The fluids are standard matter perfect fluid, dark matter, and a scalar field with the role of dark energy. A dynamical system analysis is developed in this context. A central role is played by the equation of state $\\omega_{eff}$ which determines the acceleration phase of the models. Determining the domination of a particular fluid at certain stages of the universe history by s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.09247","kind":"arxiv","version":3},"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":"1803.09247","created_at":"2026-05-18T00:10:02.288756+00:00"},{"alias_kind":"arxiv_version","alias_value":"1803.09247v3","created_at":"2026-05-18T00:10:02.288756+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.09247","created_at":"2026-05-18T00:10:02.288756+00:00"},{"alias_kind":"pith_short_12","alias_value":"PU4GSMRVTPHC","created_at":"2026-05-18T12:32:46.962924+00:00"},{"alias_kind":"pith_short_16","alias_value":"PU4GSMRVTPHC5ZGF","created_at":"2026-05-18T12:32:46.962924+00:00"},{"alias_kind":"pith_short_8","alias_value":"PU4GSMRV","created_at":"2026-05-18T12:32:46.962924+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/PU4GSMRVTPHC5ZGF245XOAHMKH","json":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH.json","graph_json":"https://pith.science/api/pith-number/PU4GSMRVTPHC5ZGF245XOAHMKH/graph.json","events_json":"https://pith.science/api/pith-number/PU4GSMRVTPHC5ZGF245XOAHMKH/events.json","paper":"https://pith.science/paper/PU4GSMRV"},"agent_actions":{"view_html":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH","download_json":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH.json","view_paper":"https://pith.science/paper/PU4GSMRV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1803.09247&json=true","fetch_graph":"https://pith.science/api/pith-number/PU4GSMRVTPHC5ZGF245XOAHMKH/graph.json","fetch_events":"https://pith.science/api/pith-number/PU4GSMRVTPHC5ZGF245XOAHMKH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH/action/storage_attestation","attest_author":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH/action/author_attestation","sign_citation":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH/action/citation_signature","submit_replication":"https://pith.science/pith/PU4GSMRVTPHC5ZGF245XOAHMKH/action/replication_record"}},"created_at":"2026-05-18T00:10:02.288756+00:00","updated_at":"2026-05-18T00:10:02.288756+00:00"}