{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:PCSHZTUASEDXM5ORA4MLWM6XY3","short_pith_number":"pith:PCSHZTUA","schema_version":"1.0","canonical_sha256":"78a47cce8091077675d10718bb33d7c6f64851c0678d3882c00885f092c69e3c","source":{"kind":"arxiv","id":"1902.04855","version":1},"attestation_state":"computed","paper":{"title":"Elastic constants of graphene: Comparison of empirical potentials and DFT calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander S. Minkin, Andrey A. Knizhnik, Andrey M. Popov, Irina V. Lebedeva","submitted_at":"2019-02-13T10:53:51Z","abstract_excerpt":"The capacity of popular classical interatomic potentials to describe elastic properties of graphene is tested. The Tersoff potential, Brenner reactive bond-order potentials REBO-1990, REBO-2000, REBO-2002 and AIREBO as well as LCBOP, PPBE-G, ReaxFF-CHO and ReaxFF-C2013 are considered. Linear and non-linear elastic response of graphene under uniaxial stretching is investigated by static energy calculations. The Young's modulus, Poisson's ratio and high-order elastic moduli are verified against the reference data available from experimental measurements and ab initio studies. The density functio"},"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":"1902.04855","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-02-13T10:53:51Z","cross_cats_sorted":[],"title_canon_sha256":"d8ffc328c7895f4e3b189b4eae6adc73e3d84f91e80a05ddf6507f171a97dd9c","abstract_canon_sha256":"c058ef723cfbde6281d002bae442961250289fa2d09f8aa5253dcdcb945d4138"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:05.735242Z","signature_b64":"wzD59iLVTUZOPXKyoj9NJ1n6zAsWbY3P6krQbxOLerdiP1w34Sg8Luw2YgLGjB4sO4S2+8cS2kYyV1pLyfwnCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78a47cce8091077675d10718bb33d7c6f64851c0678d3882c00885f092c69e3c","last_reissued_at":"2026-05-17T23:54:05.734775Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:05.734775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Elastic constants of graphene: Comparison of empirical potentials and DFT calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander S. Minkin, Andrey A. Knizhnik, Andrey M. Popov, Irina V. Lebedeva","submitted_at":"2019-02-13T10:53:51Z","abstract_excerpt":"The capacity of popular classical interatomic potentials to describe elastic properties of graphene is tested. The Tersoff potential, Brenner reactive bond-order potentials REBO-1990, REBO-2000, REBO-2002 and AIREBO as well as LCBOP, PPBE-G, ReaxFF-CHO and ReaxFF-C2013 are considered. Linear and non-linear elastic response of graphene under uniaxial stretching is investigated by static energy calculations. The Young's modulus, Poisson's ratio and high-order elastic moduli are verified against the reference data available from experimental measurements and ab initio studies. The density functio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.04855","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":"1902.04855","created_at":"2026-05-17T23:54:05.734843+00:00"},{"alias_kind":"arxiv_version","alias_value":"1902.04855v1","created_at":"2026-05-17T23:54:05.734843+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.04855","created_at":"2026-05-17T23:54:05.734843+00:00"},{"alias_kind":"pith_short_12","alias_value":"PCSHZTUASEDX","created_at":"2026-05-18T12:33:24.271573+00:00"},{"alias_kind":"pith_short_16","alias_value":"PCSHZTUASEDXM5OR","created_at":"2026-05-18T12:33:24.271573+00:00"},{"alias_kind":"pith_short_8","alias_value":"PCSHZTUA","created_at":"2026-05-18T12:33:24.271573+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/PCSHZTUASEDXM5ORA4MLWM6XY3","json":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3.json","graph_json":"https://pith.science/api/pith-number/PCSHZTUASEDXM5ORA4MLWM6XY3/graph.json","events_json":"https://pith.science/api/pith-number/PCSHZTUASEDXM5ORA4MLWM6XY3/events.json","paper":"https://pith.science/paper/PCSHZTUA"},"agent_actions":{"view_html":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3","download_json":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3.json","view_paper":"https://pith.science/paper/PCSHZTUA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1902.04855&json=true","fetch_graph":"https://pith.science/api/pith-number/PCSHZTUASEDXM5ORA4MLWM6XY3/graph.json","fetch_events":"https://pith.science/api/pith-number/PCSHZTUASEDXM5ORA4MLWM6XY3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3/action/storage_attestation","attest_author":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3/action/author_attestation","sign_citation":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3/action/citation_signature","submit_replication":"https://pith.science/pith/PCSHZTUASEDXM5ORA4MLWM6XY3/action/replication_record"}},"created_at":"2026-05-17T23:54:05.734843+00:00","updated_at":"2026-05-17T23:54:05.734843+00:00"}