{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2QNEKBESFVDBPTLF2K7FVLIFHO","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":"c998885bbbc77ba69b2e743034b31584a1be76278e543c00c5a58182627aaa37","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-08-14T01:17:49Z","title_canon_sha256":"b1dfdd04278fdd9cbc4f7463da720f94b65c7e8fdc4da3b22b97b5ccc0c898cd"},"schema_version":"1.0","source":{"id":"1508.03396","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.03396","created_at":"2026-05-18T01:19:53Z"},{"alias_kind":"arxiv_version","alias_value":"1508.03396v2","created_at":"2026-05-18T01:19:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.03396","created_at":"2026-05-18T01:19:53Z"},{"alias_kind":"pith_short_12","alias_value":"2QNEKBESFVDB","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2QNEKBESFVDBPTLF","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2QNEKBES","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:2e024e3961cae1bb569e3afaac8ec11794e8bbdc658b191ef7ea09f3258377bd","target":"graph","created_at":"2026-05-18T01:19:53Z","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 visualize the Kohn-Sham kinetic energy density (KED), and the ingredients -- the electron density, its gradient and Laplacian -- used to construct orbital-free models of it, for the AE6 test set of molecules. These are compared to related quantities used in metaGGA's, to characterize two important limits -- the gradient expansion and the localized-electron limit typified by the covalent bond. We find the second-order gradient expansion of the KED to be a surprisingly successful predictor of the exact KED, particularly at low densities where this approximation fails for exchange. This contra","authors_text":"Aeryk I. Kuna, Antonio C. Cancio, Dane Stewart","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-08-14T01:17:49Z","title":"Visualization and analysis of the Kohn-Sham kinetic energy density and its orbital-free description in molecules"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.03396","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:fe98909adb42a6e543ee7e45bb92418607cd0fb1e0680d085b9f46662c71d633","target":"record","created_at":"2026-05-18T01:19:53Z","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":"c998885bbbc77ba69b2e743034b31584a1be76278e543c00c5a58182627aaa37","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2015-08-14T01:17:49Z","title_canon_sha256":"b1dfdd04278fdd9cbc4f7463da720f94b65c7e8fdc4da3b22b97b5ccc0c898cd"},"schema_version":"1.0","source":{"id":"1508.03396","kind":"arxiv","version":2}},"canonical_sha256":"d41a4504922d4617cd65d2be5aad053bbd34ffbb37697d6024fc7031b3e885fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d41a4504922d4617cd65d2be5aad053bbd34ffbb37697d6024fc7031b3e885fa","first_computed_at":"2026-05-18T01:19:53.679410Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:19:53.679410Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9E4+iARs0LdEeJ3fHRxMxl+WzCBZCB7dnRSvnt81j0LiyoWxcSrwmpUgjeHwG02talAZgIfI/vtg+JTe6h5+AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:19:53.679952Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.03396","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe98909adb42a6e543ee7e45bb92418607cd0fb1e0680d085b9f46662c71d633","sha256:2e024e3961cae1bb569e3afaac8ec11794e8bbdc658b191ef7ea09f3258377bd"],"state_sha256":"e60d2b0fe905bd0504c3a422cb9c756502cff4320395a3b5626cb5a8ec944f9d"}