{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:O73S6PFXDFFYLBRTTPPVJTUXG6","short_pith_number":"pith:O73S6PFX","canonical_record":{"source":{"id":"2101.01580","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-05T15:18:44Z","cross_cats_sorted":[],"title_canon_sha256":"a967e039b3508ad3c5dd30c64cc5f24c8a98677c19c00dc4bbb99c5aefcf594b","abstract_canon_sha256":"70f9264dd710e1de8a026ebd8c183e9bd32212e25b25169601da2e24390bb644"},"schema_version":"1.0"},"canonical_sha256":"77f72f3cb7194b8586339bdf54ce9737a99f6d4d9d71ba8ca52d81affb30ebe7","source":{"kind":"arxiv","id":"2101.01580","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.01580","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"2101.01580v2","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.01580","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"O73S6PFXDFFY","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"pith_short_16","alias_value":"O73S6PFXDFFYLBRT","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"pith_short_8","alias_value":"O73S6PFX","created_at":"2026-07-05T02:33:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:O73S6PFXDFFYLBRTTPPVJTUXG6","target":"record","payload":{"canonical_record":{"source":{"id":"2101.01580","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-05T15:18:44Z","cross_cats_sorted":[],"title_canon_sha256":"a967e039b3508ad3c5dd30c64cc5f24c8a98677c19c00dc4bbb99c5aefcf594b","abstract_canon_sha256":"70f9264dd710e1de8a026ebd8c183e9bd32212e25b25169601da2e24390bb644"},"schema_version":"1.0"},"canonical_sha256":"77f72f3cb7194b8586339bdf54ce9737a99f6d4d9d71ba8ca52d81affb30ebe7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:33:49.522908Z","signature_b64":"Sgl1/ItjmO0w6PeUWDgH02ZkqjJeY5v8P0sa0gZ/EeqybHv0q/4rvSD5aXZoP1SJkOFSFDtyXkVdFRWEv2w5CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"77f72f3cb7194b8586339bdf54ce9737a99f6d4d9d71ba8ca52d81affb30ebe7","last_reissued_at":"2026-07-05T02:33:49.522419Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:33:49.522419Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.01580","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EfgEck0SPq8m+Wwt+A4OxT3CPhz/DhwwYFBLr0mmlY9P/jrh3B6DhGWye/Wfc4Zs06EYR2IXGtZGAdkHstdOBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T22:12:44.720590Z"},"content_sha256":"5b3fc9d505745a705174e9a6b25dbe25984e7d1b14ba8f013d83fdd2519ed920","schema_version":"1.0","event_id":"sha256:5b3fc9d505745a705174e9a6b25dbe25984e7d1b14ba8f013d83fdd2519ed920"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:O73S6PFXDFFYLBRTTPPVJTUXG6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Collisions Between Ultracold Molecules and Atoms in a Magnetic Trap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A. Chakraborty, B. E. Sauer, C. J. H. Rich, H. J. Williams, Jeremy M. Hutson, L. Caldwell, Matthew D. Frye, M. R. Tarbutt, N. J. Fitch, S. Jurgilas","submitted_at":"2021-01-05T15:18:44Z","abstract_excerpt":"We prepare mixtures of ultracold CaF molecules and Rb atoms in a magnetic trap and study their inelastic collisions. When the atoms are prepared in the spin-stretched state and the molecules in the spin-stretched component of the first rotationally excited state, they collide inelastically with a rate coefficient of $k_2 = (6.6 \\pm 1.5) \\times 10^{-11}$ cm$^{3}$/s at temperatures near 100~$\\mu$K. We attribute this to rotation-changing collisions. When the molecules are in the ground rotational state we see no inelastic loss and set an upper bound on the spin relaxation rate coefficient of $k_2"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.01580","kind":"arxiv","version":2},"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/2101.01580/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fZtD6+bpu5VqJMtNb0IfTYC4NVkbC32qkkMvMDnL7nMjxy2bRO5ookjVzVgE8DXP1cUnNPvOwheNNm/D2N8mDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T22:12:44.720971Z"},"content_sha256":"2f59b15b88a9e4454ec3f21b72afe2073d10ebf1fdce907169c9b0bf445defff","schema_version":"1.0","event_id":"sha256:2f59b15b88a9e4454ec3f21b72afe2073d10ebf1fdce907169c9b0bf445defff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O73S6PFXDFFYLBRTTPPVJTUXG6/bundle.json","state_url":"https://pith.science/pith/O73S6PFXDFFYLBRTTPPVJTUXG6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O73S6PFXDFFYLBRTTPPVJTUXG6/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-08T22:12:44Z","links":{"resolver":"https://pith.science/pith/O73S6PFXDFFYLBRTTPPVJTUXG6","bundle":"https://pith.science/pith/O73S6PFXDFFYLBRTTPPVJTUXG6/bundle.json","state":"https://pith.science/pith/O73S6PFXDFFYLBRTTPPVJTUXG6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O73S6PFXDFFYLBRTTPPVJTUXG6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:O73S6PFXDFFYLBRTTPPVJTUXG6","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":"70f9264dd710e1de8a026ebd8c183e9bd32212e25b25169601da2e24390bb644","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-05T15:18:44Z","title_canon_sha256":"a967e039b3508ad3c5dd30c64cc5f24c8a98677c19c00dc4bbb99c5aefcf594b"},"schema_version":"1.0","source":{"id":"2101.01580","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.01580","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"2101.01580v2","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.01580","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"O73S6PFXDFFY","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"pith_short_16","alias_value":"O73S6PFXDFFYLBRT","created_at":"2026-07-05T02:33:49Z"},{"alias_kind":"pith_short_8","alias_value":"O73S6PFX","created_at":"2026-07-05T02:33:49Z"}],"graph_snapshots":[{"event_id":"sha256:2f59b15b88a9e4454ec3f21b72afe2073d10ebf1fdce907169c9b0bf445defff","target":"graph","created_at":"2026-07-05T02:33:49Z","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/2101.01580/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We prepare mixtures of ultracold CaF molecules and Rb atoms in a magnetic trap and study their inelastic collisions. When the atoms are prepared in the spin-stretched state and the molecules in the spin-stretched component of the first rotationally excited state, they collide inelastically with a rate coefficient of $k_2 = (6.6 \\pm 1.5) \\times 10^{-11}$ cm$^{3}$/s at temperatures near 100~$\\mu$K. We attribute this to rotation-changing collisions. When the molecules are in the ground rotational state we see no inelastic loss and set an upper bound on the spin relaxation rate coefficient of $k_2","authors_text":"A. Chakraborty, B. E. Sauer, C. J. H. Rich, H. J. Williams, Jeremy M. Hutson, L. Caldwell, Matthew D. Frye, M. R. Tarbutt, N. J. Fitch, S. Jurgilas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-05T15:18:44Z","title":"Collisions Between Ultracold Molecules and Atoms in a Magnetic Trap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.01580","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":"sha256:5b3fc9d505745a705174e9a6b25dbe25984e7d1b14ba8f013d83fdd2519ed920","target":"record","created_at":"2026-07-05T02:33:49Z","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":"70f9264dd710e1de8a026ebd8c183e9bd32212e25b25169601da2e24390bb644","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-05T15:18:44Z","title_canon_sha256":"a967e039b3508ad3c5dd30c64cc5f24c8a98677c19c00dc4bbb99c5aefcf594b"},"schema_version":"1.0","source":{"id":"2101.01580","kind":"arxiv","version":2}},"canonical_sha256":"77f72f3cb7194b8586339bdf54ce9737a99f6d4d9d71ba8ca52d81affb30ebe7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77f72f3cb7194b8586339bdf54ce9737a99f6d4d9d71ba8ca52d81affb30ebe7","first_computed_at":"2026-07-05T02:33:49.522419Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:33:49.522419Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Sgl1/ItjmO0w6PeUWDgH02ZkqjJeY5v8P0sa0gZ/EeqybHv0q/4rvSD5aXZoP1SJkOFSFDtyXkVdFRWEv2w5CA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:33:49.522908Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.01580","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b3fc9d505745a705174e9a6b25dbe25984e7d1b14ba8f013d83fdd2519ed920","sha256:2f59b15b88a9e4454ec3f21b72afe2073d10ebf1fdce907169c9b0bf445defff"],"state_sha256":"ea4b821c921cfa57ed508e7f238d2e0e9fd50729feb29b308eeadf330931cbd9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tNOihQ5ZYEUhDxe+Hj4luyRXm76bs8kiw6/hvSK27r08ZBXx7ubc4Lc/ByS8SfV/ivPp7i6pOaKXG80DJ8xYCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T22:12:44.722940Z","bundle_sha256":"5f5a665186046315d3c024ab4b9f8b9d80a8950ec2eb333b805895a2791fe0f3"}}