{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4PFVHUS7BAZW44JQTWRVJVXFLP","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":"f108d21dbb524b7bbc845c39753ae1e1e670ae56470d9152507f7a356daeda9a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-19T18:09:43Z","title_canon_sha256":"6147642aff101929c45093e850506d69566674233705053251b908ce03567890"},"schema_version":"1.0","source":{"id":"1608.05685","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.05685","created_at":"2026-05-18T01:00:45Z"},{"alias_kind":"arxiv_version","alias_value":"1608.05685v1","created_at":"2026-05-18T01:00:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.05685","created_at":"2026-05-18T01:00:45Z"},{"alias_kind":"pith_short_12","alias_value":"4PFVHUS7BAZW","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4PFVHUS7BAZW44JQ","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4PFVHUS7","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:9fb4af9eb03179c711e8738624f1d9bc9d92ed3ba5cad0a7d0ca5295fc8eb3a4","target":"graph","created_at":"2026-05-18T01:00:45Z","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 calculations of electronic transport coefficients and optical properties require a very dense interpolation of the electronic band structure in reciprocal space that is computationally expensive and may have issues with band crossing and degeneracies. Capitalizing on a recently developed pseudo-atomic orbital projection technique, we exploit the exact tight-binding representation of the first principles electronic structure for the purposes of (1) providing an efficient strategy to explore the full band structure $E_n({\\bf k})$, (2) computing the momentum operator differentiating directly ","authors_text":"Alessandra Catellani, Alice Ruini, Arrigo Calzolari, Luis A. Agapito, Marco Buongiorno Nardelli, Marco Fornari, Pino D'Amico, Stefano Curtarolo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-19T18:09:43Z","title":"Accurate $ab~initio$ tight-binding Hamiltonians: effective tools for electronic transport and optical spectroscopy from first principles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05685","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":"sha256:9ad58bcc219fdc2d177d80246adb016056d9dee2e835812404cd96ee0d1807cb","target":"record","created_at":"2026-05-18T01:00:45Z","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":"f108d21dbb524b7bbc845c39753ae1e1e670ae56470d9152507f7a356daeda9a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-19T18:09:43Z","title_canon_sha256":"6147642aff101929c45093e850506d69566674233705053251b908ce03567890"},"schema_version":"1.0","source":{"id":"1608.05685","kind":"arxiv","version":1}},"canonical_sha256":"e3cb53d25f08336e71309da354d6e55bfe521c112c72a1e7a05972e3dd27a6d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e3cb53d25f08336e71309da354d6e55bfe521c112c72a1e7a05972e3dd27a6d6","first_computed_at":"2026-05-18T01:00:45.017031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:45.017031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QLCLdGlwuqGt8yEHXsaVX5xBZkdrIzkYAc17UZUc+4GZUWAmk1+bzu3jx4I1suN+qeZy9taHSPCZED7R2khhDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:45.017385Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.05685","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9ad58bcc219fdc2d177d80246adb016056d9dee2e835812404cd96ee0d1807cb","sha256:9fb4af9eb03179c711e8738624f1d9bc9d92ed3ba5cad0a7d0ca5295fc8eb3a4"],"state_sha256":"e09af30b3425effb8dba326b03202c8255c7f1c1138f30ffb06d7e54695c255a"}