{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:4MYPLBMEDMDVVQ65NANVULS5T5","short_pith_number":"pith:4MYPLBME","schema_version":"1.0","canonical_sha256":"e330f585841b075ac3dd681b5a2e5d9f43e6d6c78d9f9c6fa2af011fde17325c","source":{"kind":"arxiv","id":"1507.01921","version":1},"attestation_state":"computed","paper":{"title":"A low-$z$ test for interacting dark energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"G. C. Carvalho, J. S. Alcaniz, R. S. Goncalves","submitted_at":"2015-07-07T18:59:42Z","abstract_excerpt":"A non-minimal coupling between the dark matter and dark energy components may offer a way of solving the so-called coincidence problem. In this paper we propose a low-$z$ test for such hypothesis using measurements of the gas mass fraction $f_{\\rm{gas}}$ in relaxed and massive galaxy clusters. The test applies to any model whose dilution of dark matter is modified with respect to the standard $a^{-3}$ scaling, as usual in interacting models, where $a$ is the cosmological scale factor. We apply the test to current $f_{\\rm{gas}}$ data and perform Monte Carlo simulations to forecast the necessary"},"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":"1507.01921","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-07-07T18:59:42Z","cross_cats_sorted":[],"title_canon_sha256":"347390f606f022a33fe617bdb8b07e73419d8d4aff29cc626852d44a92678052","abstract_canon_sha256":"55aac22939a2b1189009699d218f195187db11ed95ead631a7b1ed5530ea3deb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:24:54.134336Z","signature_b64":"2b68DM7BCqDWS4qmGNLjvnwrNsNUzZRS8Q5R7PiuP8g3ewS4vGddfjqLzmmDaEAT2qdCUjZQN0AuFp084tPrCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e330f585841b075ac3dd681b5a2e5d9f43e6d6c78d9f9c6fa2af011fde17325c","last_reissued_at":"2026-05-18T01:24:54.133769Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:24:54.133769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A low-$z$ test for interacting dark energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"G. C. Carvalho, J. S. Alcaniz, R. S. Goncalves","submitted_at":"2015-07-07T18:59:42Z","abstract_excerpt":"A non-minimal coupling between the dark matter and dark energy components may offer a way of solving the so-called coincidence problem. In this paper we propose a low-$z$ test for such hypothesis using measurements of the gas mass fraction $f_{\\rm{gas}}$ in relaxed and massive galaxy clusters. The test applies to any model whose dilution of dark matter is modified with respect to the standard $a^{-3}$ scaling, as usual in interacting models, where $a$ is the cosmological scale factor. We apply the test to current $f_{\\rm{gas}}$ data and perform Monte Carlo simulations to forecast the necessary"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01921","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":"1507.01921","created_at":"2026-05-18T01:24:54.133841+00:00"},{"alias_kind":"arxiv_version","alias_value":"1507.01921v1","created_at":"2026-05-18T01:24:54.133841+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01921","created_at":"2026-05-18T01:24:54.133841+00:00"},{"alias_kind":"pith_short_12","alias_value":"4MYPLBMEDMDV","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_16","alias_value":"4MYPLBMEDMDVVQ65","created_at":"2026-05-18T12:29:05.191682+00:00"},{"alias_kind":"pith_short_8","alias_value":"4MYPLBME","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/4MYPLBMEDMDVVQ65NANVULS5T5","json":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5.json","graph_json":"https://pith.science/api/pith-number/4MYPLBMEDMDVVQ65NANVULS5T5/graph.json","events_json":"https://pith.science/api/pith-number/4MYPLBMEDMDVVQ65NANVULS5T5/events.json","paper":"https://pith.science/paper/4MYPLBME"},"agent_actions":{"view_html":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5","download_json":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5.json","view_paper":"https://pith.science/paper/4MYPLBME","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1507.01921&json=true","fetch_graph":"https://pith.science/api/pith-number/4MYPLBMEDMDVVQ65NANVULS5T5/graph.json","fetch_events":"https://pith.science/api/pith-number/4MYPLBMEDMDVVQ65NANVULS5T5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5/action/storage_attestation","attest_author":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5/action/author_attestation","sign_citation":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5/action/citation_signature","submit_replication":"https://pith.science/pith/4MYPLBMEDMDVVQ65NANVULS5T5/action/replication_record"}},"created_at":"2026-05-18T01:24:54.133841+00:00","updated_at":"2026-05-18T01:24:54.133841+00:00"}