{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:XA5RA735P4KCCV4NNXNVF33X4Q","short_pith_number":"pith:XA5RA735","schema_version":"1.0","canonical_sha256":"b83b107f7d7f1421578d6ddb52ef77e43d2834a5af1550eb948bca1c91a4072f","source":{"kind":"arxiv","id":"1208.3715","version":2},"attestation_state":"computed","paper":{"title":"Revisiting Cardassian Model and Cosmic Constraint","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Lixin Xu","submitted_at":"2012-08-18T01:42:45Z","abstract_excerpt":"In this paper, we revisit the Cardassian model in which the radiation energy component is included. It is important for early epoch when the radiation cannot be neglected because the equation of state (EoS) of the effective dark energy becomes time variable. Therefore, it is not equivalent to the quintessence model with a constant EoS anymore. This situation was almost overlooked in the literature. By using the recent released Union2 557 of type Ia supernovae (SN Ia), the baryon acoustic oscillation (BAO) from Sloan Digital Sky Survey and the WiggleZ data points, the full information of cosmic"},"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":"1208.3715","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-08-18T01:42:45Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6ae118d180f53bd4eb2c8797502ae8efe4adc1670eb135043bda86612b7798b7","abstract_canon_sha256":"357b60ba94d19851686ff22e67d6e766105da0b69e8b0490345ed16602a0ea4d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:18.147660Z","signature_b64":"MACjRHXPJUFjnAOG2bmYqRsj9+J/W9rYeyFmYGV7UqOoPfRguAlq9TAxWo/zdej9cpdT5Oj4t6ElewynpE7KCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b83b107f7d7f1421578d6ddb52ef77e43d2834a5af1550eb948bca1c91a4072f","last_reissued_at":"2026-05-18T03:46:18.147030Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:18.147030Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Revisiting Cardassian Model and Cosmic Constraint","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Lixin Xu","submitted_at":"2012-08-18T01:42:45Z","abstract_excerpt":"In this paper, we revisit the Cardassian model in which the radiation energy component is included. It is important for early epoch when the radiation cannot be neglected because the equation of state (EoS) of the effective dark energy becomes time variable. Therefore, it is not equivalent to the quintessence model with a constant EoS anymore. This situation was almost overlooked in the literature. By using the recent released Union2 557 of type Ia supernovae (SN Ia), the baryon acoustic oscillation (BAO) from Sloan Digital Sky Survey and the WiggleZ data points, the full information of cosmic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.3715","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":"1208.3715","created_at":"2026-05-18T03:46:18.147120+00:00"},{"alias_kind":"arxiv_version","alias_value":"1208.3715v2","created_at":"2026-05-18T03:46:18.147120+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.3715","created_at":"2026-05-18T03:46:18.147120+00:00"},{"alias_kind":"pith_short_12","alias_value":"XA5RA735P4KC","created_at":"2026-05-18T12:27:27.928770+00:00"},{"alias_kind":"pith_short_16","alias_value":"XA5RA735P4KCCV4N","created_at":"2026-05-18T12:27:27.928770+00:00"},{"alias_kind":"pith_short_8","alias_value":"XA5RA735","created_at":"2026-05-18T12:27:27.928770+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2502.05823","citing_title":"Little ado about everything II: an `emergent' dark energy from structure formation to rule cosmic tensions","ref_index":58,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q","json":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q.json","graph_json":"https://pith.science/api/pith-number/XA5RA735P4KCCV4NNXNVF33X4Q/graph.json","events_json":"https://pith.science/api/pith-number/XA5RA735P4KCCV4NNXNVF33X4Q/events.json","paper":"https://pith.science/paper/XA5RA735"},"agent_actions":{"view_html":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q","download_json":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q.json","view_paper":"https://pith.science/paper/XA5RA735","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1208.3715&json=true","fetch_graph":"https://pith.science/api/pith-number/XA5RA735P4KCCV4NNXNVF33X4Q/graph.json","fetch_events":"https://pith.science/api/pith-number/XA5RA735P4KCCV4NNXNVF33X4Q/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q/action/storage_attestation","attest_author":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q/action/author_attestation","sign_citation":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q/action/citation_signature","submit_replication":"https://pith.science/pith/XA5RA735P4KCCV4NNXNVF33X4Q/action/replication_record"}},"created_at":"2026-05-18T03:46:18.147120+00:00","updated_at":"2026-05-18T03:46:18.147120+00:00"}