{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:DPICXL5VOZTKQC4ZILAIVSCCCS","short_pith_number":"pith:DPICXL5V","schema_version":"1.0","canonical_sha256":"1bd02bafb57666a80b9942c08ac84214a26a9a95154d5ca81f0684a7cadf01e0","source":{"kind":"arxiv","id":"0810.1796","version":2},"attestation_state":"computed","paper":{"title":"The Non-universal behaviour of Cold Fermi Condensates with Narrow Feshbach Resonances","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Chi-Yong Lin, Da-Shin Lee, Ray J. Rivers","submitted_at":"2008-10-10T02:24:41Z","abstract_excerpt":"In this paper we construct an effective field theory for a condensate of cold Fermi atoms whose scattering is controlled by a narrow Feshbach resonance. We show how, from first principles, it permits a hydrodynamic description of the BEC-BCS crossover from which the equation of state, intimately related to the speed of sound, can be derived. Specifically, we stress the non-universal behaviour of the equation of state at the unitary limit of infinite scattering length that arises when either, or both, of the range of the inter-atomic force and the scale of the molecular field become large."},"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":"0810.1796","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-10-10T02:24:41Z","cross_cats_sorted":[],"title_canon_sha256":"199719bb651bb15c3d6374df9cb3b0944a14c83749714c8f32bbb774153e1183","abstract_canon_sha256":"46bc0108e0fb70739775b366452f23385da2b568ca396c7dfaa07b478bbe867c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:04:31.437870Z","signature_b64":"MAoeB0ceihlbWqgkvY/Vl8Ofnv0O6bHU0fMMyb2QuVkZ1rE5Iybyf/E//n6ifIx9t8xrPENd5pGp2KfFDH+sAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1bd02bafb57666a80b9942c08ac84214a26a9a95154d5ca81f0684a7cadf01e0","last_reissued_at":"2026-05-18T04:04:31.437139Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:04:31.437139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Non-universal behaviour of Cold Fermi Condensates with Narrow Feshbach Resonances","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Chi-Yong Lin, Da-Shin Lee, Ray J. Rivers","submitted_at":"2008-10-10T02:24:41Z","abstract_excerpt":"In this paper we construct an effective field theory for a condensate of cold Fermi atoms whose scattering is controlled by a narrow Feshbach resonance. We show how, from first principles, it permits a hydrodynamic description of the BEC-BCS crossover from which the equation of state, intimately related to the speed of sound, can be derived. Specifically, we stress the non-universal behaviour of the equation of state at the unitary limit of infinite scattering length that arises when either, or both, of the range of the inter-atomic force and the scale of the molecular field become large."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.1796","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":""},"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":"0810.1796","created_at":"2026-05-18T04:04:31.437252+00:00"},{"alias_kind":"arxiv_version","alias_value":"0810.1796v2","created_at":"2026-05-18T04:04:31.437252+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.1796","created_at":"2026-05-18T04:04:31.437252+00:00"},{"alias_kind":"pith_short_12","alias_value":"DPICXL5VOZTK","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_16","alias_value":"DPICXL5VOZTKQC4Z","created_at":"2026-05-18T12:25:57.157939+00:00"},{"alias_kind":"pith_short_8","alias_value":"DPICXL5V","created_at":"2026-05-18T12:25:57.157939+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/DPICXL5VOZTKQC4ZILAIVSCCCS","json":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS.json","graph_json":"https://pith.science/api/pith-number/DPICXL5VOZTKQC4ZILAIVSCCCS/graph.json","events_json":"https://pith.science/api/pith-number/DPICXL5VOZTKQC4ZILAIVSCCCS/events.json","paper":"https://pith.science/paper/DPICXL5V"},"agent_actions":{"view_html":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS","download_json":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS.json","view_paper":"https://pith.science/paper/DPICXL5V","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0810.1796&json=true","fetch_graph":"https://pith.science/api/pith-number/DPICXL5VOZTKQC4ZILAIVSCCCS/graph.json","fetch_events":"https://pith.science/api/pith-number/DPICXL5VOZTKQC4ZILAIVSCCCS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS/action/storage_attestation","attest_author":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS/action/author_attestation","sign_citation":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS/action/citation_signature","submit_replication":"https://pith.science/pith/DPICXL5VOZTKQC4ZILAIVSCCCS/action/replication_record"}},"created_at":"2026-05-18T04:04:31.437252+00:00","updated_at":"2026-05-18T04:04:31.437252+00:00"}