{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:G6G6N7ABF3WQBXI4XQVLETHBK5","short_pith_number":"pith:G6G6N7AB","schema_version":"1.0","canonical_sha256":"378de6fc012eed00dd1cbc2ab24ce1574248830957d64bb4f70c25264c6cbb46","source":{"kind":"arxiv","id":"2507.08479","version":1},"attestation_state":"computed","paper":{"title":"Beyond LambdaCDM: How the Hubble tension challenges early universe physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gawain Simpson, Krzysztof Bolejko, Stephen Walters","submitted_at":"2025-07-11T10:42:57Z","abstract_excerpt":"Differences in the values of the Hubble constant obtained from the local universe and the early universe have resulted in a significant tension. This tension signifies that our understanding of cosmology (physical processes and/or cosmological data) is incomplete. Some of the suggested solutions include physics of the early Universe. In this paper we aim to investigate common features of various early universe solutions to the Hubble constant tension. The physics of the early universe affects the size of the sound horizon which is probed with the Cosmic Microwave Background (CMB) data. Within "},"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":"2507.08479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2025-07-11T10:42:57Z","cross_cats_sorted":[],"title_canon_sha256":"bb42673d2ed1c01ba08784c29955a2fe8f57ee84065709decffd0a8ef14c82d6","abstract_canon_sha256":"5e411c39b32538e19f32a815075aca69bddded37bebe550e6f537d5ffdb00582"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:39:56.568848Z","signature_b64":"cS49yE12Q64S8aQVYP0R8J1p9a+I30LkFRWRUAVstK43zjiPRDGqXs0fQnR1DKVN6lAbcBfa/A1ixKAmw2QuCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"378de6fc012eed00dd1cbc2ab24ce1574248830957d64bb4f70c25264c6cbb46","last_reissued_at":"2026-07-05T11:39:56.568404Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:39:56.568404Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Beyond LambdaCDM: How the Hubble tension challenges early universe physics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Gawain Simpson, Krzysztof Bolejko, Stephen Walters","submitted_at":"2025-07-11T10:42:57Z","abstract_excerpt":"Differences in the values of the Hubble constant obtained from the local universe and the early universe have resulted in a significant tension. This tension signifies that our understanding of cosmology (physical processes and/or cosmological data) is incomplete. Some of the suggested solutions include physics of the early Universe. In this paper we aim to investigate common features of various early universe solutions to the Hubble constant tension. The physics of the early universe affects the size of the sound horizon which is probed with the Cosmic Microwave Background (CMB) data. Within "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.08479","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/2507.08479/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":"2507.08479","created_at":"2026-07-05T11:39:56.568467+00:00"},{"alias_kind":"arxiv_version","alias_value":"2507.08479v1","created_at":"2026-07-05T11:39:56.568467+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.08479","created_at":"2026-07-05T11:39:56.568467+00:00"},{"alias_kind":"pith_short_12","alias_value":"G6G6N7ABF3WQ","created_at":"2026-07-05T11:39:56.568467+00:00"},{"alias_kind":"pith_short_16","alias_value":"G6G6N7ABF3WQBXI4","created_at":"2026-07-05T11:39:56.568467+00:00"},{"alias_kind":"pith_short_8","alias_value":"G6G6N7AB","created_at":"2026-07-05T11:39:56.568467+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2510.05400","citing_title":"Binary Neutron Stars from the Moon: Early Warnings and Precision Science for the Artemis Era","ref_index":19,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5","json":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5.json","graph_json":"https://pith.science/api/pith-number/G6G6N7ABF3WQBXI4XQVLETHBK5/graph.json","events_json":"https://pith.science/api/pith-number/G6G6N7ABF3WQBXI4XQVLETHBK5/events.json","paper":"https://pith.science/paper/G6G6N7AB"},"agent_actions":{"view_html":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5","download_json":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5.json","view_paper":"https://pith.science/paper/G6G6N7AB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2507.08479&json=true","fetch_graph":"https://pith.science/api/pith-number/G6G6N7ABF3WQBXI4XQVLETHBK5/graph.json","fetch_events":"https://pith.science/api/pith-number/G6G6N7ABF3WQBXI4XQVLETHBK5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5/action/storage_attestation","attest_author":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5/action/author_attestation","sign_citation":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5/action/citation_signature","submit_replication":"https://pith.science/pith/G6G6N7ABF3WQBXI4XQVLETHBK5/action/replication_record"}},"created_at":"2026-07-05T11:39:56.568467+00:00","updated_at":"2026-07-05T11:39:56.568467+00:00"}