{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:4ZVBSGOD6WQUASCOGMW7PW4CNX","short_pith_number":"pith:4ZVBSGOD","schema_version":"1.0","canonical_sha256":"e66a1919c3f5a140484e332df7db826def074962cab4f00943bd6f7175fe922b","source":{"kind":"arxiv","id":"1504.04173","version":1},"attestation_state":"computed","paper":{"title":"Unified universe history through phantom extended Chaplygin gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"B. Pourhassan","submitted_at":"2015-04-15T19:49:58Z","abstract_excerpt":"We investigate the universe evolution from inflation to late-time acceleration in a unified way, using a two-component fluid constituted from extended Chaplygin gas alongside a phantom scalar field. We extract solutions for the various cosmological eras, focusing on the behavior of the scale factor, the various density parameters and the equation-of-state parameter. Furthermore, we extract and discuss bouncing solutions. Finally, we examine the perturbations of the model, ensuring about their stability and extracting the predictions for the tensor-to-scalar ratio."},"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":"1504.04173","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-04-15T19:49:58Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"9d06a463176b0daa589ea4fc8caa50b42f4d702a16d0f54e8cde4191fbe36297","abstract_canon_sha256":"810fe7b89e97b3a7edfedad2efb60cc0f4745d14d93005f2af96e4bf4c1fbd58"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:05.256469Z","signature_b64":"U2AmE30aEbxN9ajTmXBy30mE0ScYx5uO35kpaonRtLcGzZ8b/GZTxsB6zqUT3pM9jQWL1abYdZd99jnnWlWIDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e66a1919c3f5a140484e332df7db826def074962cab4f00943bd6f7175fe922b","last_reissued_at":"2026-05-18T01:11:05.255907Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:05.255907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Unified universe history through phantom extended Chaplygin gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"B. Pourhassan","submitted_at":"2015-04-15T19:49:58Z","abstract_excerpt":"We investigate the universe evolution from inflation to late-time acceleration in a unified way, using a two-component fluid constituted from extended Chaplygin gas alongside a phantom scalar field. We extract solutions for the various cosmological eras, focusing on the behavior of the scale factor, the various density parameters and the equation-of-state parameter. Furthermore, we extract and discuss bouncing solutions. Finally, we examine the perturbations of the model, ensuring about their stability and extracting the predictions for the tensor-to-scalar ratio."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.04173","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":"1504.04173","created_at":"2026-05-18T01:11:05.255998+00:00"},{"alias_kind":"arxiv_version","alias_value":"1504.04173v1","created_at":"2026-05-18T01:11:05.255998+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.04173","created_at":"2026-05-18T01:11:05.255998+00:00"},{"alias_kind":"pith_short_12","alias_value":"4ZVBSGOD6WQU","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_16","alias_value":"4ZVBSGOD6WQUASCO","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_8","alias_value":"4ZVBSGOD","created_at":"2026-05-18T12:29:05.191682+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/4ZVBSGOD6WQUASCOGMW7PW4CNX","json":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX.json","graph_json":"https://pith.science/api/pith-number/4ZVBSGOD6WQUASCOGMW7PW4CNX/graph.json","events_json":"https://pith.science/api/pith-number/4ZVBSGOD6WQUASCOGMW7PW4CNX/events.json","paper":"https://pith.science/paper/4ZVBSGOD"},"agent_actions":{"view_html":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX","download_json":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX.json","view_paper":"https://pith.science/paper/4ZVBSGOD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1504.04173&json=true","fetch_graph":"https://pith.science/api/pith-number/4ZVBSGOD6WQUASCOGMW7PW4CNX/graph.json","fetch_events":"https://pith.science/api/pith-number/4ZVBSGOD6WQUASCOGMW7PW4CNX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX/action/storage_attestation","attest_author":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX/action/author_attestation","sign_citation":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX/action/citation_signature","submit_replication":"https://pith.science/pith/4ZVBSGOD6WQUASCOGMW7PW4CNX/action/replication_record"}},"created_at":"2026-05-18T01:11:05.255998+00:00","updated_at":"2026-05-18T01:11:05.255998+00:00"}