{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:AKGGMINYIRBNRDC4KXRPA4CCAS","short_pith_number":"pith:AKGGMINY","schema_version":"1.0","canonical_sha256":"028c6621b84442d88c5c55e2f07042048eb9ee92f3799370c6295b6115f7d8ba","source":{"kind":"arxiv","id":"2606.30641","version":1},"attestation_state":"computed","paper":{"title":"Primordial Black Holes in a Radiation-Dominated Universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Amanda Miller, John T. Giblin Jr., Katy Clough, Mary Gerhardinger, Thomas W. Baumgarte","submitted_at":"2026-06-29T17:59:01Z","abstract_excerpt":"Primordial fluctuations frozen out during inflation re-enter the cosmological horizon and can collapse, leading to the formation of primordial black holes. We perform simulations of the direct collapse of over-dense regions re-entering the horizon during a radiation-dominated epoch, using full 3+1 general relativistic simulations with the BSSN formalism. Building on previous studies, we impose periodic boundary conditions and allow the matter content of the Universe to self-consistently drive its dynamics. We analyze the evolution of over-densities in both the collapse and dispersal regimes an"},"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":"2606.30641","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-06-29T17:59:01Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"7d48a0601f911fe71efb0742ae3b10ebd13bc6804ad4b584e2d89eaabd453d9a","abstract_canon_sha256":"85aa61f5f277611c669f00ed0d345ec4eeec5011ba2e87b28b093fc3c66915ed"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T02:18:23.977436Z","signature_b64":"TMULoh0ZTCw53g5ergzSNLOVpY8xJqOyCDLhTA+vEmSsvStDux3rbx2t+fKac5gVRqxdY3OGueXqyI6Z3gUcCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"028c6621b84442d88c5c55e2f07042048eb9ee92f3799370c6295b6115f7d8ba","last_reissued_at":"2026-06-30T02:18:23.976800Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T02:18:23.976800Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Primordial Black Holes in a Radiation-Dominated Universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Amanda Miller, John T. Giblin Jr., Katy Clough, Mary Gerhardinger, Thomas W. Baumgarte","submitted_at":"2026-06-29T17:59:01Z","abstract_excerpt":"Primordial fluctuations frozen out during inflation re-enter the cosmological horizon and can collapse, leading to the formation of primordial black holes. We perform simulations of the direct collapse of over-dense regions re-entering the horizon during a radiation-dominated epoch, using full 3+1 general relativistic simulations with the BSSN formalism. Building on previous studies, we impose periodic boundary conditions and allow the matter content of the Universe to self-consistently drive its dynamics. We analyze the evolution of over-densities in both the collapse and dispersal regimes an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.30641","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/2606.30641/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":"2606.30641","created_at":"2026-06-30T02:18:23.976898+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.30641v1","created_at":"2026-06-30T02:18:23.976898+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.30641","created_at":"2026-06-30T02:18:23.976898+00:00"},{"alias_kind":"pith_short_12","alias_value":"AKGGMINYIRBN","created_at":"2026-06-30T02:18:23.976898+00:00"},{"alias_kind":"pith_short_16","alias_value":"AKGGMINYIRBNRDC4","created_at":"2026-06-30T02:18:23.976898+00:00"},{"alias_kind":"pith_short_8","alias_value":"AKGGMINY","created_at":"2026-06-30T02:18:23.976898+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/AKGGMINYIRBNRDC4KXRPA4CCAS","json":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS.json","graph_json":"https://pith.science/api/pith-number/AKGGMINYIRBNRDC4KXRPA4CCAS/graph.json","events_json":"https://pith.science/api/pith-number/AKGGMINYIRBNRDC4KXRPA4CCAS/events.json","paper":"https://pith.science/paper/AKGGMINY"},"agent_actions":{"view_html":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS","download_json":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS.json","view_paper":"https://pith.science/paper/AKGGMINY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.30641&json=true","fetch_graph":"https://pith.science/api/pith-number/AKGGMINYIRBNRDC4KXRPA4CCAS/graph.json","fetch_events":"https://pith.science/api/pith-number/AKGGMINYIRBNRDC4KXRPA4CCAS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS/action/storage_attestation","attest_author":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS/action/author_attestation","sign_citation":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS/action/citation_signature","submit_replication":"https://pith.science/pith/AKGGMINYIRBNRDC4KXRPA4CCAS/action/replication_record"}},"created_at":"2026-06-30T02:18:23.976898+00:00","updated_at":"2026-06-30T02:18:23.976898+00:00"}