{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:X5F5TGVEXSLLIKYPNRTMB2WOSL","short_pith_number":"pith:X5F5TGVE","canonical_record":{"source":{"id":"1311.5608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-21T22:51:17Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"a007e254877ec8d65b50570ee2d667e353a6f2a5bbd1a53e48c838dde4d6de62","abstract_canon_sha256":"234a452d9c9c6e8032c6cf2d0186c0d96694c287c7c8c27bd3aa2c5d3b5b2d4e"},"schema_version":"1.0"},"canonical_sha256":"bf4bd99aa4bc96b42b0f6c66c0eace92d5c9dd4659783f4299695e9f52ab0e4d","source":{"kind":"arxiv","id":"1311.5608","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.5608","created_at":"2026-05-18T02:59:34Z"},{"alias_kind":"arxiv_version","alias_value":"1311.5608v1","created_at":"2026-05-18T02:59:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.5608","created_at":"2026-05-18T02:59:34Z"},{"alias_kind":"pith_short_12","alias_value":"X5F5TGVEXSLL","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"X5F5TGVEXSLLIKYP","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"X5F5TGVE","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:X5F5TGVEXSLLIKYPNRTMB2WOSL","target":"record","payload":{"canonical_record":{"source":{"id":"1311.5608","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-21T22:51:17Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"a007e254877ec8d65b50570ee2d667e353a6f2a5bbd1a53e48c838dde4d6de62","abstract_canon_sha256":"234a452d9c9c6e8032c6cf2d0186c0d96694c287c7c8c27bd3aa2c5d3b5b2d4e"},"schema_version":"1.0"},"canonical_sha256":"bf4bd99aa4bc96b42b0f6c66c0eace92d5c9dd4659783f4299695e9f52ab0e4d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:59:34.088635Z","signature_b64":"zfBSDMcs/Jqb/9M4VYLu0RqClVA37dEyCFoVsJouBj+m+30kZz7djHgVCdnlSka4qlkzq9DcJbzYfjf0a1FRBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf4bd99aa4bc96b42b0f6c66c0eace92d5c9dd4659783f4299695e9f52ab0e4d","last_reissued_at":"2026-05-18T02:59:34.087894Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:59:34.087894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.5608","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":"2026-05-18T02:59:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"six00fC7gUuDXFUlDsHXubkhv7mHOVzMYxKNl2U1dacNRpHDBPwxQGLPwjQtcyCLBbzaUObSb2gvx9FuJh1nAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:12:06.853018Z"},"content_sha256":"cc96916d60571e44c018c75e7831ba2c462e907b2088153a03963c41a55dd881","schema_version":"1.0","event_id":"sha256:cc96916d60571e44c018c75e7831ba2c462e907b2088153a03963c41a55dd881"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:X5F5TGVEXSLLIKYPNRTMB2WOSL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"cond-mat.quant-gas","authors_text":"A. Farrell, B. P. van Zyl, D. A. W. Hutchinson, E. Zaremba, J. Towers, P. Pisarski","submitted_at":"2013-11-21T22:51:17Z","abstract_excerpt":"The average-density approximation is used to construct a nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas. This functional is then used to formulate a Thomas-Fermi von Weizs\\\"acker-like theory for the description of the ground state properties of the system. The quality of the kinetic energy functional is tested by performing a fully self-consistent calculation for an ideal, harmonically confined, two-dimensional system. Good agreement with exact results are found, with the number and kinetic energy densities exhibiting oscillatory structure associated with the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.5608","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":"2026-05-18T02:59:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ewf9mf5a45Y6aQj6iFudesb6TCWV2TY5fvZ9pMG7HZnxqUPnRUUVrMwn04bf9y2uVCTXBMgXU4YCpcX2quxJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:12:06.853787Z"},"content_sha256":"f33cd848fb438bb2503a952ce3ad743ecd61dbaaa0ad1c4f1dcf73a54e9afe73","schema_version":"1.0","event_id":"sha256:f33cd848fb438bb2503a952ce3ad743ecd61dbaaa0ad1c4f1dcf73a54e9afe73"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X5F5TGVEXSLLIKYPNRTMB2WOSL/bundle.json","state_url":"https://pith.science/pith/X5F5TGVEXSLLIKYPNRTMB2WOSL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X5F5TGVEXSLLIKYPNRTMB2WOSL/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":"2026-05-25T17:12:06Z","links":{"resolver":"https://pith.science/pith/X5F5TGVEXSLLIKYPNRTMB2WOSL","bundle":"https://pith.science/pith/X5F5TGVEXSLLIKYPNRTMB2WOSL/bundle.json","state":"https://pith.science/pith/X5F5TGVEXSLLIKYPNRTMB2WOSL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X5F5TGVEXSLLIKYPNRTMB2WOSL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:X5F5TGVEXSLLIKYPNRTMB2WOSL","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":"234a452d9c9c6e8032c6cf2d0186c0d96694c287c7c8c27bd3aa2c5d3b5b2d4e","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-21T22:51:17Z","title_canon_sha256":"a007e254877ec8d65b50570ee2d667e353a6f2a5bbd1a53e48c838dde4d6de62"},"schema_version":"1.0","source":{"id":"1311.5608","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.5608","created_at":"2026-05-18T02:59:34Z"},{"alias_kind":"arxiv_version","alias_value":"1311.5608v1","created_at":"2026-05-18T02:59:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.5608","created_at":"2026-05-18T02:59:34Z"},{"alias_kind":"pith_short_12","alias_value":"X5F5TGVEXSLL","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"X5F5TGVEXSLLIKYP","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"X5F5TGVE","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:f33cd848fb438bb2503a952ce3ad743ecd61dbaaa0ad1c4f1dcf73a54e9afe73","target":"graph","created_at":"2026-05-18T02:59:34Z","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":"The average-density approximation is used to construct a nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas. This functional is then used to formulate a Thomas-Fermi von Weizs\\\"acker-like theory for the description of the ground state properties of the system. The quality of the kinetic energy functional is tested by performing a fully self-consistent calculation for an ideal, harmonically confined, two-dimensional system. Good agreement with exact results are found, with the number and kinetic energy densities exhibiting oscillatory structure associated with the","authors_text":"A. Farrell, B. P. van Zyl, D. A. W. Hutchinson, E. Zaremba, J. Towers, P. Pisarski","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-21T22:51:17Z","title":"A nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.5608","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:cc96916d60571e44c018c75e7831ba2c462e907b2088153a03963c41a55dd881","target":"record","created_at":"2026-05-18T02:59:34Z","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":"234a452d9c9c6e8032c6cf2d0186c0d96694c287c7c8c27bd3aa2c5d3b5b2d4e","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-11-21T22:51:17Z","title_canon_sha256":"a007e254877ec8d65b50570ee2d667e353a6f2a5bbd1a53e48c838dde4d6de62"},"schema_version":"1.0","source":{"id":"1311.5608","kind":"arxiv","version":1}},"canonical_sha256":"bf4bd99aa4bc96b42b0f6c66c0eace92d5c9dd4659783f4299695e9f52ab0e4d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf4bd99aa4bc96b42b0f6c66c0eace92d5c9dd4659783f4299695e9f52ab0e4d","first_computed_at":"2026-05-18T02:59:34.087894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:59:34.087894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zfBSDMcs/Jqb/9M4VYLu0RqClVA37dEyCFoVsJouBj+m+30kZz7djHgVCdnlSka4qlkzq9DcJbzYfjf0a1FRBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:59:34.088635Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.5608","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cc96916d60571e44c018c75e7831ba2c462e907b2088153a03963c41a55dd881","sha256:f33cd848fb438bb2503a952ce3ad743ecd61dbaaa0ad1c4f1dcf73a54e9afe73"],"state_sha256":"b38f46d1dfa0f83af25b925c7090e4df4e7a6d0ffd84ac0c3f16171cf815a646"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sfntbbzz8fnp5eVEJHidi1HA2pI7SLy+EjNvjFkjNT+UM9ECAirRGtXTN7DZ9Qo81Hs+t+UX5xhTSQb2q4UXBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:12:06.857758Z","bundle_sha256":"20bdfa5f1acc489f4d48d1852cf79dca50cb82783fa04beee81a8140fe1c8098"}}