{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2003:F6OKZQPY2FIXZBTCZOZESBYKAB","short_pith_number":"pith:F6OKZQPY","schema_version":"1.0","canonical_sha256":"2f9cacc1f8d1517c8662cbb249070a0044329972483b5b0525f2eed87ee831d0","source":{"kind":"arxiv","id":"physics/0311016","version":3},"attestation_state":"computed","paper":{"title":"Low-energy unphysical saddle in polynomial molecular potentials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat"],"primary_cat":"physics.chem-ph","authors_text":"Alessio Del Monte, Gian Paolo Brivio, Luca G. Molinari, Nicola Manini","submitted_at":"2003-11-04T14:28:13Z","abstract_excerpt":"Vibrational spectra of polyatomic molecules are often obtained from a polynomial expansion of the adiabatic potential around a minimum. For several molecules, we show that such an approximation displays an unphysical saddle point of comparatively small energy, leading to a region where the potential is negative and unbounded. This poses an upper limit for a reliable evaluation of vibrational levels. We argue that the presence of such saddle points is general."},"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":"physics/0311016","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2003-11-04T14:28:13Z","cross_cats_sorted":["cond-mat"],"title_canon_sha256":"82a9c24463d9887162cc0613bf3fecaabc0f0cb49db93fa08b0e130f4a747574","abstract_canon_sha256":"5e1aac2e05fddb42a49768bb6b83d6444254cdb6fef5e38ce47e69c79cb8b623"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:00:15.076864Z","signature_b64":"IKWuf5w5xhB7xkMJn+CkP/+DxLAo/pnNEfCUbNAK40zTMSr3Gfbw0UZPsL9wS1g2Tfci7Xf9o4GKThn+CEcMBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2f9cacc1f8d1517c8662cbb249070a0044329972483b5b0525f2eed87ee831d0","last_reissued_at":"2026-05-18T03:00:15.076095Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:00:15.076095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Low-energy unphysical saddle in polynomial molecular potentials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat"],"primary_cat":"physics.chem-ph","authors_text":"Alessio Del Monte, Gian Paolo Brivio, Luca G. Molinari, Nicola Manini","submitted_at":"2003-11-04T14:28:13Z","abstract_excerpt":"Vibrational spectra of polyatomic molecules are often obtained from a polynomial expansion of the adiabatic potential around a minimum. For several molecules, we show that such an approximation displays an unphysical saddle point of comparatively small energy, leading to a region where the potential is negative and unbounded. This poses an upper limit for a reliable evaluation of vibrational levels. We argue that the presence of such saddle points is general."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0311016","kind":"arxiv","version":3},"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":"physics/0311016","created_at":"2026-05-18T03:00:15.076225+00:00"},{"alias_kind":"arxiv_version","alias_value":"physics/0311016v3","created_at":"2026-05-18T03:00:15.076225+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0311016","created_at":"2026-05-18T03:00:15.076225+00:00"},{"alias_kind":"pith_short_12","alias_value":"F6OKZQPY2FIX","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_16","alias_value":"F6OKZQPY2FIXZBTC","created_at":"2026-05-18T12:25:51.375804+00:00"},{"alias_kind":"pith_short_8","alias_value":"F6OKZQPY","created_at":"2026-05-18T12:25:51.375804+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/F6OKZQPY2FIXZBTCZOZESBYKAB","json":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB.json","graph_json":"https://pith.science/api/pith-number/F6OKZQPY2FIXZBTCZOZESBYKAB/graph.json","events_json":"https://pith.science/api/pith-number/F6OKZQPY2FIXZBTCZOZESBYKAB/events.json","paper":"https://pith.science/paper/F6OKZQPY"},"agent_actions":{"view_html":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB","download_json":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB.json","view_paper":"https://pith.science/paper/F6OKZQPY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=physics/0311016&json=true","fetch_graph":"https://pith.science/api/pith-number/F6OKZQPY2FIXZBTCZOZESBYKAB/graph.json","fetch_events":"https://pith.science/api/pith-number/F6OKZQPY2FIXZBTCZOZESBYKAB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB/action/storage_attestation","attest_author":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB/action/author_attestation","sign_citation":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB/action/citation_signature","submit_replication":"https://pith.science/pith/F6OKZQPY2FIXZBTCZOZESBYKAB/action/replication_record"}},"created_at":"2026-05-18T03:00:15.076225+00:00","updated_at":"2026-05-18T03:00:15.076225+00:00"}