{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:4R5BV4SONT6IM6LN2QGZVWOMBS","short_pith_number":"pith:4R5BV4SO","schema_version":"1.0","canonical_sha256":"e47a1af24e6cfc86796dd40d9ad9cc0cbfb001f4e5a9cd30518841ddd6bbbe52","source":{"kind":"arxiv","id":"2507.16147","version":1},"attestation_state":"computed","paper":{"title":"Observational constraints on phenomenological emergent dark energy and barotropic dark matter characterized by a constant equation of state parameter","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Jian-Qi Liu, Jia-Wei Wu, Yan-Hong Yao, Yan su","submitted_at":"2025-07-22T01:49:36Z","abstract_excerpt":"While cold dark matter is widely supported by a range of cosmological observations, it encounters several difficulties at smaller scales. These issues have prompted the investigation of various alternative dark matter candidates, leaving the question \"What is dark matter?\" still open. In this work, we propose a new cosmological model that considers dark matter as a barotropic fluid with a constant equation of state parameter and interprets dark energy as the phenomenological emergent dark energy rather than a cosmological constant. We then place constraints on our new model using the Planck 20"},"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":"2507.16147","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-07-22T01:49:36Z","cross_cats_sorted":[],"title_canon_sha256":"faeb8035cc04cacbd5e9071b8eafc2d12e90d12c057a4bcc7728470d6d8b30c3","abstract_canon_sha256":"40fb7ebfbbd6bf30bd9dc0fcddafc96b1c871a79fc407b0d6c8fd7b2a67293a0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:41:03.945104Z","signature_b64":"alja5jYIShqMHCIyScVbuUYs4sEh3UCpGuMRsI5GlipC16l86QhoZYG+4qO3WmM7VlwHddqw+Ir9JTiAnf/gAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e47a1af24e6cfc86796dd40d9ad9cc0cbfb001f4e5a9cd30518841ddd6bbbe52","last_reissued_at":"2026-07-05T11:41:03.944632Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:41:03.944632Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observational constraints on phenomenological emergent dark energy and barotropic dark matter characterized by a constant equation of state parameter","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Jian-Qi Liu, Jia-Wei Wu, Yan-Hong Yao, Yan su","submitted_at":"2025-07-22T01:49:36Z","abstract_excerpt":"While cold dark matter is widely supported by a range of cosmological observations, it encounters several difficulties at smaller scales. These issues have prompted the investigation of various alternative dark matter candidates, leaving the question \"What is dark matter?\" still open. In this work, we propose a new cosmological model that considers dark matter as a barotropic fluid with a constant equation of state parameter and interprets dark energy as the phenomenological emergent dark energy rather than a cosmological constant. We then place constraints on our new model using the Planck 20"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.16147","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.16147/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":"2507.16147","created_at":"2026-07-05T11:41:03.944689+00:00"},{"alias_kind":"arxiv_version","alias_value":"2507.16147v1","created_at":"2026-07-05T11:41:03.944689+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.16147","created_at":"2026-07-05T11:41:03.944689+00:00"},{"alias_kind":"pith_short_12","alias_value":"4R5BV4SONT6I","created_at":"2026-07-05T11:41:03.944689+00:00"},{"alias_kind":"pith_short_16","alias_value":"4R5BV4SONT6IM6LN","created_at":"2026-07-05T11:41:03.944689+00:00"},{"alias_kind":"pith_short_8","alias_value":"4R5BV4SO","created_at":"2026-07-05T11:41:03.944689+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2608.04763","citing_title":"Is Dark Matter Really Matter?","ref_index":19,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS","json":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS.json","graph_json":"https://pith.science/api/pith-number/4R5BV4SONT6IM6LN2QGZVWOMBS/graph.json","events_json":"https://pith.science/api/pith-number/4R5BV4SONT6IM6LN2QGZVWOMBS/events.json","paper":"https://pith.science/paper/4R5BV4SO"},"agent_actions":{"view_html":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS","download_json":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS.json","view_paper":"https://pith.science/paper/4R5BV4SO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2507.16147&json=true","fetch_graph":"https://pith.science/api/pith-number/4R5BV4SONT6IM6LN2QGZVWOMBS/graph.json","fetch_events":"https://pith.science/api/pith-number/4R5BV4SONT6IM6LN2QGZVWOMBS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS/action/storage_attestation","attest_author":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS/action/author_attestation","sign_citation":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS/action/citation_signature","submit_replication":"https://pith.science/pith/4R5BV4SONT6IM6LN2QGZVWOMBS/action/replication_record"}},"created_at":"2026-07-05T11:41:03.944689+00:00","updated_at":"2026-07-05T11:41:03.944689+00:00"}