{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PMFD74UXELF5QV2SSSQWJOXRJU","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"409a9290eb8571575d4f9d7478425956112091d3ab4eb8f056c8818c89e32c7a","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-01-06T17:26:19Z","title_canon_sha256":"511b195c98e968f1006e437832a6e6872512ee7af4ba683f4af35e1b369057d6"},"schema_version":"1.0","source":{"id":"2501.03158","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.03158","created_at":"2026-07-05T09:57:32Z"},{"alias_kind":"arxiv_version","alias_value":"2501.03158v1","created_at":"2026-07-05T09:57:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.03158","created_at":"2026-07-05T09:57:32Z"},{"alias_kind":"pith_short_12","alias_value":"PMFD74UXELF5","created_at":"2026-07-05T09:57:32Z"},{"alias_kind":"pith_short_16","alias_value":"PMFD74UXELF5QV2S","created_at":"2026-07-05T09:57:32Z"},{"alias_kind":"pith_short_8","alias_value":"PMFD74UX","created_at":"2026-07-05T09:57:32Z"}],"graph_snapshots":[{"event_id":"sha256:818bfebc7f89192869cf23d851088575927fdaa269b71220d32b21219ffaf986","target":"graph","created_at":"2026-07-05T09:57:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2501.03158/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the experimental production and characterization of a dense cold atomic cloud of \\(^{88}\\text{Sr}\\) atoms, optimized for the future studies of light transport in highly dense regimes. Using narrow-line molasses on the 689 nm transition, combined with a far off-resonant optical dipole trap, we achieve spatial densities as high as \\(7.9 \\times 10^{13} \\, \\text{atoms/cm}^3\\) and optical depths up to 64. This approach stands out from previous methods by integrating narrow-line molasses with an optical dipole trap, enabling high-density samples without relying on evaporative cooling. Unl","authors_text":"A. Cipris, M. do Amaral Martins, M. Frometa Fernandez, M. Hugbart, P. G. Santos Dias, P. H. Nantes Magnani, Ph. W. Courteille, R. Celistrino Teixeira","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-01-06T17:26:19Z","title":"Phase-contrast imaging of a dense atomic cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.03158","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:bf8f6515ef42271de6afe112a115056deb4c53d9c240a820fd5dbcf2bcfe93f5","target":"record","created_at":"2026-07-05T09:57:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"409a9290eb8571575d4f9d7478425956112091d3ab4eb8f056c8818c89e32c7a","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-01-06T17:26:19Z","title_canon_sha256":"511b195c98e968f1006e437832a6e6872512ee7af4ba683f4af35e1b369057d6"},"schema_version":"1.0","source":{"id":"2501.03158","kind":"arxiv","version":1}},"canonical_sha256":"7b0a3ff29722cbd8575294a164baf14d2b1eddfd2392c68dbf19e8bce4d04bf4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b0a3ff29722cbd8575294a164baf14d2b1eddfd2392c68dbf19e8bce4d04bf4","first_computed_at":"2026-07-05T09:57:32.422742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:57:32.422742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yu0d/gDECh9I+P9505GId+wE6aqLklToavMkQPnwWs6o2AMHNjfOljSKUIKFcev4GBgU04jPKgObsTtwobiNCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:57:32.423172Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.03158","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf8f6515ef42271de6afe112a115056deb4c53d9c240a820fd5dbcf2bcfe93f5","sha256:818bfebc7f89192869cf23d851088575927fdaa269b71220d32b21219ffaf986"],"state_sha256":"17a3e74657dca998567e84e457d8266bca5fc9b16f4f2dc63f7a3478fdac07b7"}