{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:JSBEL7QRXFPZKX7XNR527YUM4X","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":"4c0544c43f72ba342a202517a81af3e19d281c8398aba9f616c7ea9d11703615","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-05-16T21:46:00Z","title_canon_sha256":"366da7e273436f395ad55f19db96ba9602c0391234263322e801b030c43816d1"},"schema_version":"1.0","source":{"id":"1105.3233","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.3233","created_at":"2026-05-18T04:09:44Z"},{"alias_kind":"arxiv_version","alias_value":"1105.3233v2","created_at":"2026-05-18T04:09:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.3233","created_at":"2026-05-18T04:09:44Z"},{"alias_kind":"pith_short_12","alias_value":"JSBEL7QRXFPZ","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"JSBEL7QRXFPZKX7X","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"JSBEL7QR","created_at":"2026-05-18T12:26:32Z"}],"graph_snapshots":[{"event_id":"sha256:f808ed7c39254f7488dbe7fd97eeab43679c03e069b72f57602bcf960aeb1d19","target":"graph","created_at":"2026-05-18T04:09:44Z","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 that three group IIIB divalent ions, B+, Al+, and In+, have anomalously small blackbody radiation (BBR) shifts of the ns^2 1S0 - nsnp 3P0 clock transitions. The fractional BBR shifts for these ions are at least 10 times smaller than those of any other present or proposed optical frequency standards at the same temperature, and are less than 0.3% of the Sr clock shift. We have developed a hybrid configuration interaction + coupled-cluster method that provides accurate treatment of correlation corrections in such ions, considers all relevant states in the same systematic way, and yields ","authors_text":"Charles W. Clark, M. G. Kozlov, M. S. Safronova","cross_cats":["physics.optics","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-05-16T21:46:00Z","title":"Precision calculation of blackbody radiation shifts for optical frequency metrology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.3233","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":"sha256:08d9aa90577be91accb4c01844e275d6dc4ff8305fd4941c549d88b502d76c0e","target":"record","created_at":"2026-05-18T04:09:44Z","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":"4c0544c43f72ba342a202517a81af3e19d281c8398aba9f616c7ea9d11703615","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-05-16T21:46:00Z","title_canon_sha256":"366da7e273436f395ad55f19db96ba9602c0391234263322e801b030c43816d1"},"schema_version":"1.0","source":{"id":"1105.3233","kind":"arxiv","version":2}},"canonical_sha256":"4c8245fe11b95f955ff76c7bafe28ce5e7f9e1260c53b8f7bdbde6414d601181","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4c8245fe11b95f955ff76c7bafe28ce5e7f9e1260c53b8f7bdbde6414d601181","first_computed_at":"2026-05-18T04:09:44.174787Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:09:44.174787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K+GO0wltXpq4F0GBxXKP8ci2FtWJ0jHTlpP1MqO6rZsCGIv6zJyfdqqWVn0IrvRx9OyLsJOYZHJyfWlHZF4/Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:09:44.175272Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.3233","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:08d9aa90577be91accb4c01844e275d6dc4ff8305fd4941c549d88b502d76c0e","sha256:f808ed7c39254f7488dbe7fd97eeab43679c03e069b72f57602bcf960aeb1d19"],"state_sha256":"01b55902f94bc6bcf1318aa94c11f46a16dd2738136bcc5d8bd475dad40ac2b2"}