{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:3KDORTLXCRP4ZNUGCPUKFCXTPO","short_pith_number":"pith:3KDORTLX","schema_version":"1.0","canonical_sha256":"da86e8cd77145fccb68613e8a28af37bbc6a2bc652dd192fdbf8be4283ef9b99","source":{"kind":"arxiv","id":"1408.7096","version":2},"attestation_state":"computed","paper":{"title":"Strong-coupling ansatz for the one-dimensional Fermi gas in a harmonic potential","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Georg M. Bruun, Jesper Levinsen, Meera M. Parish, Pietro Massignan","submitted_at":"2014-08-29T18:34:22Z","abstract_excerpt":"A major challenge in modern physics is to accurately describe strongly interacting quantum many-body systems. One-dimensional systems provide fundamental insights since they are often amenable to exact methods. However, no exact solution is known for the experimentally relevant case of external confinement. Here, we propose a powerful ansatz for the one-dimensional Fermi gas in a harmonic potential near the limit of infinite short-range repulsion. For the case of a single impurity in a Fermi sea, we show that our ansatz is indistinguishable from numerically exact results in both the few- and m"},"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":"1408.7096","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2014-08-29T18:34:22Z","cross_cats_sorted":["cond-mat.str-el","quant-ph"],"title_canon_sha256":"4d5c1d6ce32b937d8a3d88a4b424b01f0a01472eb8cd09eace22dd20fa812a72","abstract_canon_sha256":"a7ccd711be3c71bc27c412a3d21cbc24c66700723b5fd7f4dc7d5689ce6b0860"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:20.533202Z","signature_b64":"ASjC8dYVXIpMh+ygfXeYTpOJGxutw/UJGWDjb9oWh0g0TuK8aVLV+zhznUCHVKHsyAsTTvWR9tYuawj+wSXeDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"da86e8cd77145fccb68613e8a28af37bbc6a2bc652dd192fdbf8be4283ef9b99","last_reissued_at":"2026-05-18T01:36:20.532716Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:20.532716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Strong-coupling ansatz for the one-dimensional Fermi gas in a harmonic potential","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Georg M. Bruun, Jesper Levinsen, Meera M. Parish, Pietro Massignan","submitted_at":"2014-08-29T18:34:22Z","abstract_excerpt":"A major challenge in modern physics is to accurately describe strongly interacting quantum many-body systems. One-dimensional systems provide fundamental insights since they are often amenable to exact methods. However, no exact solution is known for the experimentally relevant case of external confinement. Here, we propose a powerful ansatz for the one-dimensional Fermi gas in a harmonic potential near the limit of infinite short-range repulsion. For the case of a single impurity in a Fermi sea, we show that our ansatz is indistinguishable from numerically exact results in both the few- and m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.7096","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":"1408.7096","created_at":"2026-05-18T01:36:20.532789+00:00"},{"alias_kind":"arxiv_version","alias_value":"1408.7096v2","created_at":"2026-05-18T01:36:20.532789+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.7096","created_at":"2026-05-18T01:36:20.532789+00:00"},{"alias_kind":"pith_short_12","alias_value":"3KDORTLXCRP4","created_at":"2026-05-18T12:28:11.866339+00:00"},{"alias_kind":"pith_short_16","alias_value":"3KDORTLXCRP4ZNUG","created_at":"2026-05-18T12:28:11.866339+00:00"},{"alias_kind":"pith_short_8","alias_value":"3KDORTLX","created_at":"2026-05-18T12:28:11.866339+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/3KDORTLXCRP4ZNUGCPUKFCXTPO","json":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO.json","graph_json":"https://pith.science/api/pith-number/3KDORTLXCRP4ZNUGCPUKFCXTPO/graph.json","events_json":"https://pith.science/api/pith-number/3KDORTLXCRP4ZNUGCPUKFCXTPO/events.json","paper":"https://pith.science/paper/3KDORTLX"},"agent_actions":{"view_html":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO","download_json":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO.json","view_paper":"https://pith.science/paper/3KDORTLX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1408.7096&json=true","fetch_graph":"https://pith.science/api/pith-number/3KDORTLXCRP4ZNUGCPUKFCXTPO/graph.json","fetch_events":"https://pith.science/api/pith-number/3KDORTLXCRP4ZNUGCPUKFCXTPO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO/action/storage_attestation","attest_author":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO/action/author_attestation","sign_citation":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO/action/citation_signature","submit_replication":"https://pith.science/pith/3KDORTLXCRP4ZNUGCPUKFCXTPO/action/replication_record"}},"created_at":"2026-05-18T01:36:20.532789+00:00","updated_at":"2026-05-18T01:36:20.532789+00:00"}