{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:Z57IR4WNPR2CFDNMEP46CCOKSH","short_pith_number":"pith:Z57IR4WN","schema_version":"1.0","canonical_sha256":"cf7e88f2cd7c74228dac23f9e109ca91ebedd7b7d247d254dcf6d3af021e676b","source":{"kind":"arxiv","id":"2608.13206","version":1},"attestation_state":"computed","paper":{"title":"Long-term 3+1 simulations of primordial black hole formation during radiation domination","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph"],"primary_cat":"gr-qc","authors_text":"Chul-Moon Yoo, Rong-Gen Cai, Shao-Jiang Wang, Zhuan Ning","submitted_at":"2026-08-13T13:08:52Z","abstract_excerpt":"We develop an efficient three-dimensional numerical-relativity framework for primordial black-hole (PBH) formation from superhorizon curvature perturbations in a radiation-dominated Universe. We implement flux-conservative relativistic hydrodynamics in the adaptive-mesh-refinement code \\textsc{GRChombo} and introduce a cosmologically scaled Gamma-driver that allows the cosmic-time step to grow in proportion to the scale factor. For a representative long-term simulation, the scaled driver preserves the apparent-horizon mass evolution and constraint behavior while reducing the number of coarse-l"},"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":"2608.13206","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2026-08-13T13:08:52Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"0380139b8b7f49005319c6ba19b5430636f233da4f43c416f71121f59345c50a","abstract_canon_sha256":"7ed83ace617728eaf050246c468e4727ecf7f50ed03b6fe3dc7bfafe382e56a1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-14T01:00:39.922652Z","signature_b64":"ViOq9rVZTFRW19y5x7jBE38amryjDadx6LAiSYPHWjyggxQ/D8L9W1/ZUsdtkaF5IMBlQz8Rt5hSEKmY16jpCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf7e88f2cd7c74228dac23f9e109ca91ebedd7b7d247d254dcf6d3af021e676b","last_reissued_at":"2026-08-14T01:00:39.920696Z","signature_status":"signed_v1","first_computed_at":"2026-08-14T01:00:39.920696Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Long-term 3+1 simulations of primordial black hole formation during radiation domination","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph"],"primary_cat":"gr-qc","authors_text":"Chul-Moon Yoo, Rong-Gen Cai, Shao-Jiang Wang, Zhuan Ning","submitted_at":"2026-08-13T13:08:52Z","abstract_excerpt":"We develop an efficient three-dimensional numerical-relativity framework for primordial black-hole (PBH) formation from superhorizon curvature perturbations in a radiation-dominated Universe. We implement flux-conservative relativistic hydrodynamics in the adaptive-mesh-refinement code \\textsc{GRChombo} and introduce a cosmologically scaled Gamma-driver that allows the cosmic-time step to grow in proportion to the scale factor. For a representative long-term simulation, the scaled driver preserves the apparent-horizon mass evolution and constraint behavior while reducing the number of coarse-l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.13206","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/2608.13206/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":"2608.13206","created_at":"2026-08-14T01:00:39.921671+00:00"},{"alias_kind":"arxiv_version","alias_value":"2608.13206v1","created_at":"2026-08-14T01:00:39.921671+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.13206","created_at":"2026-08-14T01:00:39.921671+00:00"},{"alias_kind":"pith_short_12","alias_value":"Z57IR4WNPR2C","created_at":"2026-08-14T01:00:39.921671+00:00"},{"alias_kind":"pith_short_16","alias_value":"Z57IR4WNPR2CFDNM","created_at":"2026-08-14T01:00:39.921671+00:00"},{"alias_kind":"pith_short_8","alias_value":"Z57IR4WN","created_at":"2026-08-14T01:00:39.921671+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/Z57IR4WNPR2CFDNMEP46CCOKSH","json":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH.json","graph_json":"https://pith.science/api/pith-number/Z57IR4WNPR2CFDNMEP46CCOKSH/graph.json","events_json":"https://pith.science/api/pith-number/Z57IR4WNPR2CFDNMEP46CCOKSH/events.json","paper":"https://pith.science/paper/Z57IR4WN"},"agent_actions":{"view_html":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH","download_json":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH.json","view_paper":"https://pith.science/paper/Z57IR4WN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2608.13206&json=true","fetch_graph":"https://pith.science/api/pith-number/Z57IR4WNPR2CFDNMEP46CCOKSH/graph.json","fetch_events":"https://pith.science/api/pith-number/Z57IR4WNPR2CFDNMEP46CCOKSH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH/action/storage_attestation","attest_author":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH/action/author_attestation","sign_citation":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH/action/citation_signature","submit_replication":"https://pith.science/pith/Z57IR4WNPR2CFDNMEP46CCOKSH/action/replication_record"}},"created_at":"2026-08-14T01:00:39.921671+00:00","updated_at":"2026-08-14T01:00:39.921671+00:00"}