{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2002:66GPE5P7IJDP52LV4WTUIKBSRZ","short_pith_number":"pith:66GPE5P7","schema_version":"1.0","canonical_sha256":"f78cf275ff4246fee975e5a74428328e5234e5732dc1ea46c8fc32221d8c874c","source":{"kind":"arxiv","id":"cond-mat/0209249","version":1},"attestation_state":"computed","paper":{"title":"The Mystery of the Ramsey Fringe that Didn't Chirp","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"D.M. Harber, E.A. Cornell, H.J. Lewandowski, J.M. McGuirk","submitted_at":"2002-09-10T21:55:00Z","abstract_excerpt":"We use precision microwave spectroscopy of magnetically trapped, ultra-cold 87Rb to characterize intra- and inter-state density correlations. The cold collision shifts for both normal and condensed clouds are measured. The results verify the presence of the sometimes controversial \"factors of two\", in normal-cloud mean-field energies, both within a particular state and between two distinct spin species. One might expect that as two spin species decohere, the inter-state factor of two would revert to unity, but the associated frequency chirp one naively expects from such a trend is not observed"},"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":"cond-mat/0209249","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.soft","submitted_at":"2002-09-10T21:55:00Z","cross_cats_sorted":[],"title_canon_sha256":"743fd7df253e73b0635a231e5b2d6eea1e2c52f3d8d7b143d88ba603e2a3dfb8","abstract_canon_sha256":"c28e74cdda031099c5eef719c110cb6c6ad557f9029c177c9cc272798b970e7e"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:32.329955Z","signature_b64":"maHJTzH3qth1KUbR9Ko5eU/JKNxu7Or8jGKMi9r3sq+DxcEWkkR0lAQp+63wxR3YDLC3ByIyJ1NU6wBMKmzDAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f78cf275ff4246fee975e5a74428328e5234e5732dc1ea46c8fc32221d8c874c","last_reissued_at":"2026-05-18T00:37:32.329473Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:32.329473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Mystery of the Ramsey Fringe that Didn't Chirp","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"D.M. Harber, E.A. Cornell, H.J. Lewandowski, J.M. McGuirk","submitted_at":"2002-09-10T21:55:00Z","abstract_excerpt":"We use precision microwave spectroscopy of magnetically trapped, ultra-cold 87Rb to characterize intra- and inter-state density correlations. The cold collision shifts for both normal and condensed clouds are measured. The results verify the presence of the sometimes controversial \"factors of two\", in normal-cloud mean-field energies, both within a particular state and between two distinct spin species. One might expect that as two spin species decohere, the inter-state factor of two would revert to unity, but the associated frequency chirp one naively expects from such a trend is not observed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0209249","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":""},"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":"cond-mat/0209249","created_at":"2026-05-18T00:37:32.329551+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0209249v1","created_at":"2026-05-18T00:37:32.329551+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0209249","created_at":"2026-05-18T00:37:32.329551+00:00"},{"alias_kind":"pith_short_12","alias_value":"66GPE5P7IJDP","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_16","alias_value":"66GPE5P7IJDP52LV","created_at":"2026-05-18T12:25:50.845339+00:00"},{"alias_kind":"pith_short_8","alias_value":"66GPE5P7","created_at":"2026-05-18T12:25:50.845339+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/66GPE5P7IJDP52LV4WTUIKBSRZ","json":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ.json","graph_json":"https://pith.science/api/pith-number/66GPE5P7IJDP52LV4WTUIKBSRZ/graph.json","events_json":"https://pith.science/api/pith-number/66GPE5P7IJDP52LV4WTUIKBSRZ/events.json","paper":"https://pith.science/paper/66GPE5P7"},"agent_actions":{"view_html":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ","download_json":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ.json","view_paper":"https://pith.science/paper/66GPE5P7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0209249&json=true","fetch_graph":"https://pith.science/api/pith-number/66GPE5P7IJDP52LV4WTUIKBSRZ/graph.json","fetch_events":"https://pith.science/api/pith-number/66GPE5P7IJDP52LV4WTUIKBSRZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ/action/storage_attestation","attest_author":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ/action/author_attestation","sign_citation":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ/action/citation_signature","submit_replication":"https://pith.science/pith/66GPE5P7IJDP52LV4WTUIKBSRZ/action/replication_record"}},"created_at":"2026-05-18T00:37:32.329551+00:00","updated_at":"2026-05-18T00:37:32.329551+00:00"}