{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:FH2TR4NYJI4Q6AU55IKGGLTDRN","short_pith_number":"pith:FH2TR4NY","canonical_record":{"source":{"id":"1101.4671","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-01-24T21:53:18Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"7412e1a4be679ed35f9bb65152c139ff5bf5931f366d479f6b31e3d39b1c19f1","abstract_canon_sha256":"dcfefb0e84c1bdca72866c82265327b2a259f9a5cedac8341b7ba4cc39b759e9"},"schema_version":"1.0"},"canonical_sha256":"29f538f1b84a390f029dea14632e638b45657031afe3dbaa9dbc395c8fdda478","source":{"kind":"arxiv","id":"1101.4671","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.4671","created_at":"2026-05-18T02:03:22Z"},{"alias_kind":"arxiv_version","alias_value":"1101.4671v1","created_at":"2026-05-18T02:03:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4671","created_at":"2026-05-18T02:03:22Z"},{"alias_kind":"pith_short_12","alias_value":"FH2TR4NYJI4Q","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"FH2TR4NYJI4Q6AU5","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"FH2TR4NY","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:FH2TR4NYJI4Q6AU55IKGGLTDRN","target":"record","payload":{"canonical_record":{"source":{"id":"1101.4671","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-01-24T21:53:18Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"7412e1a4be679ed35f9bb65152c139ff5bf5931f366d479f6b31e3d39b1c19f1","abstract_canon_sha256":"dcfefb0e84c1bdca72866c82265327b2a259f9a5cedac8341b7ba4cc39b759e9"},"schema_version":"1.0"},"canonical_sha256":"29f538f1b84a390f029dea14632e638b45657031afe3dbaa9dbc395c8fdda478","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:22.750572Z","signature_b64":"25tjLlNWhj2VPoGuZBu0c2ZCq4PTL/rqvNKHUaviisASFNPQu7RWVw1od7grTbDElEdhCaV6EN8lggyFF2MfAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"29f538f1b84a390f029dea14632e638b45657031afe3dbaa9dbc395c8fdda478","last_reissued_at":"2026-05-18T02:03:22.750116Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:22.750116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.4671","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:03:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p+nMC3hPKDHEBuMFry5Sz3H3swXnHPKWvCMOWbsjm7u+kGTPyvDEh2W86aftoRvCYzXSHgwdv5Qi/fRCuqzaAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T06:02:17.957583Z"},"content_sha256":"81375833ea168193653585fd574cb2af20301da8394cf761ef1ea4bf2ca83fd4","schema_version":"1.0","event_id":"sha256:81375833ea168193653585fd574cb2af20301da8394cf761ef1ea4bf2ca83fd4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:FH2TR4NYJI4Q6AU55IKGGLTDRN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical pathways in ultracold reactions of SrF molecules","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"physics.atom-ph","authors_text":"Edmund R. Meyer, John L. Bohn","submitted_at":"2011-01-24T21:53:18Z","abstract_excerpt":"We present a theoretical investigation of the chemical reaction SrF + SrF $\\rightarrow$ products, focusing on reactions at ultralow temperatures. We find that bond swapping, SrF + SrF $\\rightarrow$ Sr$_2$ + F$_2$, is energetically forbidden at these temperatures. Rather, the only energetically allowed reaction is SrF + SrF $\\rightarrow$ SrF$_2$ + Sr, and even then only singlet states of the SrF$_2$ trimer can form. A calculation along a reduced reaction path demonstrates that this abstraction reaction is barrierless, and proceeds by one SrF molecule \"handing off\" a fluorine atom to the other m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4671","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:03:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vjr1i67b1AKT3KBqnEAlrvtxhXu7sA4udnHRYFgXda+Yv4kKhArYHTDj0getLtaVqhXH+7LZqDw8+99GsWWeCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T06:02:17.957940Z"},"content_sha256":"fb88c58ab845ec497e5d892ba3881b5858783f75c7ebe238cf8be286cb6e3c0a","schema_version":"1.0","event_id":"sha256:fb88c58ab845ec497e5d892ba3881b5858783f75c7ebe238cf8be286cb6e3c0a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FH2TR4NYJI4Q6AU55IKGGLTDRN/bundle.json","state_url":"https://pith.science/pith/FH2TR4NYJI4Q6AU55IKGGLTDRN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FH2TR4NYJI4Q6AU55IKGGLTDRN/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":"2026-06-01T06:02:17Z","links":{"resolver":"https://pith.science/pith/FH2TR4NYJI4Q6AU55IKGGLTDRN","bundle":"https://pith.science/pith/FH2TR4NYJI4Q6AU55IKGGLTDRN/bundle.json","state":"https://pith.science/pith/FH2TR4NYJI4Q6AU55IKGGLTDRN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FH2TR4NYJI4Q6AU55IKGGLTDRN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:FH2TR4NYJI4Q6AU55IKGGLTDRN","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":"dcfefb0e84c1bdca72866c82265327b2a259f9a5cedac8341b7ba4cc39b759e9","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-01-24T21:53:18Z","title_canon_sha256":"7412e1a4be679ed35f9bb65152c139ff5bf5931f366d479f6b31e3d39b1c19f1"},"schema_version":"1.0","source":{"id":"1101.4671","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.4671","created_at":"2026-05-18T02:03:22Z"},{"alias_kind":"arxiv_version","alias_value":"1101.4671v1","created_at":"2026-05-18T02:03:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4671","created_at":"2026-05-18T02:03:22Z"},{"alias_kind":"pith_short_12","alias_value":"FH2TR4NYJI4Q","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"FH2TR4NYJI4Q6AU5","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"FH2TR4NY","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:fb88c58ab845ec497e5d892ba3881b5858783f75c7ebe238cf8be286cb6e3c0a","target":"graph","created_at":"2026-05-18T02:03:22Z","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 present a theoretical investigation of the chemical reaction SrF + SrF $\\rightarrow$ products, focusing on reactions at ultralow temperatures. We find that bond swapping, SrF + SrF $\\rightarrow$ Sr$_2$ + F$_2$, is energetically forbidden at these temperatures. Rather, the only energetically allowed reaction is SrF + SrF $\\rightarrow$ SrF$_2$ + Sr, and even then only singlet states of the SrF$_2$ trimer can form. A calculation along a reduced reaction path demonstrates that this abstraction reaction is barrierless, and proceeds by one SrF molecule \"handing off\" a fluorine atom to the other m","authors_text":"Edmund R. Meyer, John L. Bohn","cross_cats":["physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-01-24T21:53:18Z","title":"Chemical pathways in ultracold reactions of SrF molecules"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4671","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":"sha256:81375833ea168193653585fd574cb2af20301da8394cf761ef1ea4bf2ca83fd4","target":"record","created_at":"2026-05-18T02:03:22Z","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":"dcfefb0e84c1bdca72866c82265327b2a259f9a5cedac8341b7ba4cc39b759e9","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-01-24T21:53:18Z","title_canon_sha256":"7412e1a4be679ed35f9bb65152c139ff5bf5931f366d479f6b31e3d39b1c19f1"},"schema_version":"1.0","source":{"id":"1101.4671","kind":"arxiv","version":1}},"canonical_sha256":"29f538f1b84a390f029dea14632e638b45657031afe3dbaa9dbc395c8fdda478","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"29f538f1b84a390f029dea14632e638b45657031afe3dbaa9dbc395c8fdda478","first_computed_at":"2026-05-18T02:03:22.750116Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:22.750116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"25tjLlNWhj2VPoGuZBu0c2ZCq4PTL/rqvNKHUaviisASFNPQu7RWVw1od7grTbDElEdhCaV6EN8lggyFF2MfAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:22.750572Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.4671","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81375833ea168193653585fd574cb2af20301da8394cf761ef1ea4bf2ca83fd4","sha256:fb88c58ab845ec497e5d892ba3881b5858783f75c7ebe238cf8be286cb6e3c0a"],"state_sha256":"acfa594fd40910daeda7a07be67f29b05ba68aec33be31e34c2e43dcdfdf546f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kfTeRNo5N4hm9sdrzGJcxlF3J9HZpFbBreesjxbUtCuypRPQHWmqBpLuRLjbZ4Jaeh+DaGX7qtO7N+GEXiQxDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T06:02:17.959906Z","bundle_sha256":"fc0110b6b43225ae46cce283fc0ac736718e7af22bd69963ea6c7c17c597193a"}}