{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:NEWPPQW3ALXBK2GAYHG4TPQKAI","short_pith_number":"pith:NEWPPQW3","schema_version":"1.0","canonical_sha256":"692cf7c2db02ee1568c0c1cdc9be0a022154bed968f770b404d44cddff73eb76","source":{"kind":"arxiv","id":"1401.5177","version":3},"attestation_state":"computed","paper":{"title":"Testing coupled dark energy with large scale structure observation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Lixin Xu, Weiqiang Yang","submitted_at":"2014-01-21T05:11:38Z","abstract_excerpt":"The coupling between the dark components provides a new approach to mitigate the coincidence problem of cosmological standard model. In this paper, dark energy is treated as a fluid with a constant equation of state, whose coupling with dark matter is $\\bar{Q}=3H\\xi_x\\bar{\\rho}_x$. In the frame of dark energy, we derive the evolution equations for the density and velocity perturbations. According to the Markov Chain Monte Carlo method, we constrain the model by currently available cosmic observations which include cosmic microwave background radiation, baryon acoustic oscillation, type Ia supe"},"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":"1401.5177","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2014-01-21T05:11:38Z","cross_cats_sorted":[],"title_canon_sha256":"596dd383f013bf32871d3193ffd0a063631279d2ea0afe16a3750ac497b913fa","abstract_canon_sha256":"f7b9d7dead10f3e883217b05b7650a616959ba0bef0908d05de0edb01ac35b94"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:45:12.564093Z","signature_b64":"rjY9qGHqhsq7uqX2Unlfg+9w2yhlYbNaBjhnqAEkPSuS9MoMVMZImSaHyHiIa+4AsP/OzCHV1L4wfDt/8UxkBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"692cf7c2db02ee1568c0c1cdc9be0a022154bed968f770b404d44cddff73eb76","last_reissued_at":"2026-05-18T02:45:12.563460Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:45:12.563460Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Testing coupled dark energy with large scale structure observation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Lixin Xu, Weiqiang Yang","submitted_at":"2014-01-21T05:11:38Z","abstract_excerpt":"The coupling between the dark components provides a new approach to mitigate the coincidence problem of cosmological standard model. In this paper, dark energy is treated as a fluid with a constant equation of state, whose coupling with dark matter is $\\bar{Q}=3H\\xi_x\\bar{\\rho}_x$. In the frame of dark energy, we derive the evolution equations for the density and velocity perturbations. According to the Markov Chain Monte Carlo method, we constrain the model by currently available cosmic observations which include cosmic microwave background radiation, baryon acoustic oscillation, type Ia supe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.5177","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":"1401.5177","created_at":"2026-05-18T02:45:12.563540+00:00"},{"alias_kind":"arxiv_version","alias_value":"1401.5177v3","created_at":"2026-05-18T02:45:12.563540+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.5177","created_at":"2026-05-18T02:45:12.563540+00:00"},{"alias_kind":"pith_short_12","alias_value":"NEWPPQW3ALXB","created_at":"2026-05-18T12:28:41.024544+00:00"},{"alias_kind":"pith_short_16","alias_value":"NEWPPQW3ALXBK2GA","created_at":"2026-05-18T12:28:41.024544+00:00"},{"alias_kind":"pith_short_8","alias_value":"NEWPPQW3","created_at":"2026-05-18T12:28:41.024544+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1908.03098","citing_title":"Quantifying the impacts of future gravitational-wave data on constraining interacting dark energy","ref_index":73,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI","json":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI.json","graph_json":"https://pith.science/api/pith-number/NEWPPQW3ALXBK2GAYHG4TPQKAI/graph.json","events_json":"https://pith.science/api/pith-number/NEWPPQW3ALXBK2GAYHG4TPQKAI/events.json","paper":"https://pith.science/paper/NEWPPQW3"},"agent_actions":{"view_html":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI","download_json":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI.json","view_paper":"https://pith.science/paper/NEWPPQW3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1401.5177&json=true","fetch_graph":"https://pith.science/api/pith-number/NEWPPQW3ALXBK2GAYHG4TPQKAI/graph.json","fetch_events":"https://pith.science/api/pith-number/NEWPPQW3ALXBK2GAYHG4TPQKAI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI/action/storage_attestation","attest_author":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI/action/author_attestation","sign_citation":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI/action/citation_signature","submit_replication":"https://pith.science/pith/NEWPPQW3ALXBK2GAYHG4TPQKAI/action/replication_record"}},"created_at":"2026-05-18T02:45:12.563540+00:00","updated_at":"2026-05-18T02:45:12.563540+00:00"}