{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:FHWYPD5Y3CE4E2WGZ6J6VLL34D","short_pith_number":"pith:FHWYPD5Y","schema_version":"1.0","canonical_sha256":"29ed878fb8d889c26ac6cf93eaad7be0c4a5c6927f628b83ab72693582893f23","source":{"kind":"arxiv","id":"1906.10605","version":1},"attestation_state":"computed","paper":{"title":"van der Waals forces stabilize low-energy polymorphism in B2O3: Implications for the crystallization anomaly","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.dis-nn"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Fran\\c{c}ois-Xavier Coudert, Francesco Mauri, Guillaume Ferlat, Henri Hay, Maria Hellgren, Michele Casula","submitted_at":"2019-06-25T15:25:59Z","abstract_excerpt":"The cohesive energies and structural properties of recently predicted, and never synthesized, B$_2$O$_3$ polymorphs are investigated from first principles using density functional theory and high-accuracy many-body methods, namely, the random phase approximation and quantum Monte Carlo. We demonstrate that the van der Waals forces play a key role in making the experimentally known polymorph (B$_2$O$_3$-I) the lowest in energy, with many competing metastable structures lying only a few kcal/mol above. Remarkably, all metastable crystals are comparable in energy and density to the glass, while h"},"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":"1906.10605","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-06-25T15:25:59Z","cross_cats_sorted":["cond-mat.dis-nn"],"title_canon_sha256":"c30737a20cf25671cff8e8d924d6e5ec213d624dcd92cd152fa146dc6b53d717","abstract_canon_sha256":"0fcd7604289ac0576cfe9706188d5a053710c20b55d3c4ac1008434b1b6d28f4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:15.833164Z","signature_b64":"saCblDsR5bwZU/9YOE+AO++yjNdde4P9zNlkaL/J3ACMiBh4sRq3JOUYM6Xpb0uhp9kOjHPOsZKokBpnQHEBCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"29ed878fb8d889c26ac6cf93eaad7be0c4a5c6927f628b83ab72693582893f23","last_reissued_at":"2026-05-17T23:42:15.832466Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:15.832466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"van der Waals forces stabilize low-energy polymorphism in B2O3: Implications for the crystallization anomaly","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.dis-nn"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Fran\\c{c}ois-Xavier Coudert, Francesco Mauri, Guillaume Ferlat, Henri Hay, Maria Hellgren, Michele Casula","submitted_at":"2019-06-25T15:25:59Z","abstract_excerpt":"The cohesive energies and structural properties of recently predicted, and never synthesized, B$_2$O$_3$ polymorphs are investigated from first principles using density functional theory and high-accuracy many-body methods, namely, the random phase approximation and quantum Monte Carlo. We demonstrate that the van der Waals forces play a key role in making the experimentally known polymorph (B$_2$O$_3$-I) the lowest in energy, with many competing metastable structures lying only a few kcal/mol above. Remarkably, all metastable crystals are comparable in energy and density to the glass, while h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.10605","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1906.10605","created_at":"2026-05-17T23:42:15.832574+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.10605v1","created_at":"2026-05-17T23:42:15.832574+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.10605","created_at":"2026-05-17T23:42:15.832574+00:00"},{"alias_kind":"pith_short_12","alias_value":"FHWYPD5Y3CE4","created_at":"2026-05-18T12:33:15.570797+00:00"},{"alias_kind":"pith_short_16","alias_value":"FHWYPD5Y3CE4E2WG","created_at":"2026-05-18T12:33:15.570797+00:00"},{"alias_kind":"pith_short_8","alias_value":"FHWYPD5Y","created_at":"2026-05-18T12:33:15.570797+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1906.10605","citing_title":"van der Waals forces stabilize low-energy polymorphism in B2O3: Implications for the crystallization anomaly","ref_index":71,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D","json":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D.json","graph_json":"https://pith.science/api/pith-number/FHWYPD5Y3CE4E2WGZ6J6VLL34D/graph.json","events_json":"https://pith.science/api/pith-number/FHWYPD5Y3CE4E2WGZ6J6VLL34D/events.json","paper":"https://pith.science/paper/FHWYPD5Y"},"agent_actions":{"view_html":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D","download_json":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D.json","view_paper":"https://pith.science/paper/FHWYPD5Y","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.10605&json=true","fetch_graph":"https://pith.science/api/pith-number/FHWYPD5Y3CE4E2WGZ6J6VLL34D/graph.json","fetch_events":"https://pith.science/api/pith-number/FHWYPD5Y3CE4E2WGZ6J6VLL34D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D/action/storage_attestation","attest_author":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D/action/author_attestation","sign_citation":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D/action/citation_signature","submit_replication":"https://pith.science/pith/FHWYPD5Y3CE4E2WGZ6J6VLL34D/action/replication_record"}},"created_at":"2026-05-17T23:42:15.832574+00:00","updated_at":"2026-05-17T23:42:15.832574+00:00"}