{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:37LXTOH7WAIQZDCZ3PD6CGQQJK","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":"e9eadb7c9938e2d05a3c855f9c2f84664b0bf9377552882ba8b10ef9a0d31a9a","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-03-17T10:13:30Z","title_canon_sha256":"0289aaeb3deb72e803d873ff37c30efa0f214bb7307a6051237e6ea4d43b8aa1"},"schema_version":"1.0","source":{"id":"2303.09869","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.09869","created_at":"2026-07-05T08:47:05Z"},{"alias_kind":"arxiv_version","alias_value":"2303.09869v4","created_at":"2026-07-05T08:47:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.09869","created_at":"2026-07-05T08:47:05Z"},{"alias_kind":"pith_short_12","alias_value":"37LXTOH7WAIQ","created_at":"2026-07-05T08:47:05Z"},{"alias_kind":"pith_short_16","alias_value":"37LXTOH7WAIQZDCZ","created_at":"2026-07-05T08:47:05Z"},{"alias_kind":"pith_short_8","alias_value":"37LXTOH7","created_at":"2026-07-05T08:47:05Z"}],"graph_snapshots":[{"event_id":"sha256:26df3d851a92eb1fde7584f12d2f82b0d3777f9b3601c181310efe78aa728cb3","target":"graph","created_at":"2026-07-05T08:47:05Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2303.09869/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Phonon properties of realistic materials are routinely calculated within the Density Functional Perturbation Theory\\,(DFPT). This is a semi--classical approach where the atoms are assumed to oscillate along classical trajectories immersed in the electronic Kohn--Sham density, treated quantistically. In this work I demonstrate that, in metals, non--adiabatic effects induce a gap between the DFTP phonon frequencies and the fully quantistic solution of the phonon Dyson equation. A gap that increases with the phonon energy width reflecting the breakdown of the semi--classical DFPT description. The","authors_text":"Andrea Marini","cross_cats":["math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-03-17T10:13:30Z","title":"Non--adiabatic effects lead to the breakdown of the semi-classical phonon concept"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.09869","kind":"arxiv","version":4},"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:de30a2a8c77cfb17a747162eb0e0c86b2ff53634c129fcbc2504f3e8e70cff5e","target":"record","created_at":"2026-07-05T08:47:05Z","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":"e9eadb7c9938e2d05a3c855f9c2f84664b0bf9377552882ba8b10ef9a0d31a9a","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-03-17T10:13:30Z","title_canon_sha256":"0289aaeb3deb72e803d873ff37c30efa0f214bb7307a6051237e6ea4d43b8aa1"},"schema_version":"1.0","source":{"id":"2303.09869","kind":"arxiv","version":4}},"canonical_sha256":"dfd779b8ffb0110c8c59dbc7e11a104aa3766c82174b0b29420ad244ed72ea21","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfd779b8ffb0110c8c59dbc7e11a104aa3766c82174b0b29420ad244ed72ea21","first_computed_at":"2026-07-05T08:47:05.316442Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:47:05.316442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nbQi7OKaGM6FQWz7kREnpwykceyNHbmq0pWEikd3Sgf/8gdB/D+gRZXuTj29s2wGmabHSx6TVkPY+Z2pTPYfCw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:47:05.316863Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.09869","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de30a2a8c77cfb17a747162eb0e0c86b2ff53634c129fcbc2504f3e8e70cff5e","sha256:26df3d851a92eb1fde7584f12d2f82b0d3777f9b3601c181310efe78aa728cb3"],"state_sha256":"15f04db782079d3e126814f9f769ddb4f887b42b05c48c0d1d044b886becf05a"}