{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:VAOBV5I77R55RESMRSPVDMH4NU","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":"78320e01a2d2f697347c049d1b4adf44073f5102b492e01c4f4701d849968d86","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-05-27T18:06:53Z","title_canon_sha256":"6fb0ba4b3f31dbc459fa0a6b5b164520b4b453f2317c165365e203d63631481f"},"schema_version":"1.0","source":{"id":"1305.6282","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.6282","created_at":"2026-05-18T03:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"1305.6282v2","created_at":"2026-05-18T03:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.6282","created_at":"2026-05-18T03:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"VAOBV5I77R55","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"VAOBV5I77R55RESM","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"VAOBV5I7","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:02a6660293498a028f7fd7eb5a8bdc8530f8c7a861e7db9af8c346d558ead89f","target":"graph","created_at":"2026-05-18T03:06:44Z","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"},"paper":{"abstract_excerpt":"We show theoretically that ultracold hydrogen atoms have very favorable properties for sympathetic cooling of molecules to microkelvin temperatures. We calculate the potential energy surfaces for spin-polarized interactions of H atoms with the prototype molecules NH(triplet-Sigma-) and OH(doublet-Pi) and show that they are shallow (50 to 80 cm-1) and only weakly anisotropic. We carry out quantum collision calculations on H+NH and H+OH and show that the ratio of elastic to inelastic cross sections is high enough to allow sympathetic cooling from temperatures well over 1 K for NH and around 250 ","authors_text":"Jeremy M. Hutson, Maykel L. Gonzalez-Martinez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-05-27T18:06:53Z","title":"Ultracold hydrogen atoms: a versatile coolant to produce ultracold molecules"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.6282","kind":"arxiv","version":2},"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":"sha256:4179ac34d465147479ba48262310bd95302a8b7f44397c870f1634c6ec1bde04","target":"record","created_at":"2026-05-18T03:06:44Z","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":"78320e01a2d2f697347c049d1b4adf44073f5102b492e01c4f4701d849968d86","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-05-27T18:06:53Z","title_canon_sha256":"6fb0ba4b3f31dbc459fa0a6b5b164520b4b453f2317c165365e203d63631481f"},"schema_version":"1.0","source":{"id":"1305.6282","kind":"arxiv","version":2}},"canonical_sha256":"a81c1af51ffc7bd8924c8c9f51b0fc6d3bfdba07c16b183065f0ddbe7614982e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a81c1af51ffc7bd8924c8c9f51b0fc6d3bfdba07c16b183065f0ddbe7614982e","first_computed_at":"2026-05-18T03:06:44.583453Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:06:44.583453Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uJZ+dlXSejn3E+0CDH8kloCTQ5nB5egcTH20UTkNlr28IQcq9HBv975xmoPN60QukEuLu/Kk6Yf9iwh9NIIAAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:06:44.584091Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.6282","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4179ac34d465147479ba48262310bd95302a8b7f44397c870f1634c6ec1bde04","sha256:02a6660293498a028f7fd7eb5a8bdc8530f8c7a861e7db9af8c346d558ead89f"],"state_sha256":"73fa5f8a5781209b6f9110b8e65f664ebc23d77427c35774e799c5b3ebfa81db"}