{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:WNUWJBBTAG2WV356XJBEI3DHRC","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":"75414c585b5c7538221181ead52dcd9652263d23cec51dde3364514e2919ebea","cross_cats_sorted":["nucl-th","physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-24T17:20:15Z","title_canon_sha256":"06032beb3538311ce7defda994e8da1eec5c303aba65b332f32aeb28f355ff81"},"schema_version":"1.0","source":{"id":"0911.4608","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.4608","created_at":"2026-05-18T02:34:03Z"},{"alias_kind":"arxiv_version","alias_value":"0911.4608v2","created_at":"2026-05-18T02:34:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.4608","created_at":"2026-05-18T02:34:03Z"},{"alias_kind":"pith_short_12","alias_value":"WNUWJBBTAG2W","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WNUWJBBTAG2WV356","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WNUWJBBT","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:ec6bf2f6f05252644e825315b8eda8edb9da87af47f23136df023a0395d64dec","target":"graph","created_at":"2026-05-18T02:34:03Z","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 study the ratio between the fermion-fermion scattering length and the dimer-dimer scattering length for systems of nonrelativistic fermions, using the same functional renormalisation technique as previously applied to fermionic matter. We find a strong dependence on the cutoff function used in the renormalisation flow for a two-body truncation of the action. Adding a simple three-body term substantially reduces this dependence.","authors_text":"Boris Krippa, Michael C. Birse, Niels R. Walet","cross_cats":["nucl-th","physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-24T17:20:15Z","title":"Renormalization group, dimer-dimer scattering, and three-body forces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.4608","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:c63e822bbebf3a21006d9edd3eae7143a2856e384baa87ce69a79d48600ab956","target":"record","created_at":"2026-05-18T02:34:03Z","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":"75414c585b5c7538221181ead52dcd9652263d23cec51dde3364514e2919ebea","cross_cats_sorted":["nucl-th","physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2009-11-24T17:20:15Z","title_canon_sha256":"06032beb3538311ce7defda994e8da1eec5c303aba65b332f32aeb28f355ff81"},"schema_version":"1.0","source":{"id":"0911.4608","kind":"arxiv","version":2}},"canonical_sha256":"b36964843301b56aefbeba42446c678884efe5c0e1b19cbeeb270843870df832","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b36964843301b56aefbeba42446c678884efe5c0e1b19cbeeb270843870df832","first_computed_at":"2026-05-18T02:34:03.821041Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:03.821041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"REpD3AkWC8rYKjnobexiNX09cTrmVa1DMtTGiBa4cj27LWT/PFDkW30MNOczkb+fTu1jEj4dZlg/XNl8c7mYDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:03.821746Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.4608","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c63e822bbebf3a21006d9edd3eae7143a2856e384baa87ce69a79d48600ab956","sha256:ec6bf2f6f05252644e825315b8eda8edb9da87af47f23136df023a0395d64dec"],"state_sha256":"f56eab189e568614a09ef2ad0fb07a14fa500cac811932de7510bbf6c4d278cd"}