{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:Q2OBZFI2BJFTZCB3VOWNZOXSD4","short_pith_number":"pith:Q2OBZFI2","schema_version":"1.0","canonical_sha256":"869c1c951a0a4b3c883babacdcbaf21f18ea4893b10c501c3ef08178cad67abb","source":{"kind":"arxiv","id":"cond-mat/0407243","version":1},"attestation_state":"computed","paper":{"title":"Photoelasticity of sodium silicate glass from first principles","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. Donadio, F. Tassone, M. Bernasconi","submitted_at":"2004-07-09T15:38:17Z","abstract_excerpt":"Based on density-functional perturbation theory we have computed the photoelastic tensor of a model of sodium silicate glass of composition (Na$_2$O)$_{0.25}$(SiO$_2$)$_{0.75}$ (NS3). The model (containig 84 atoms) is obtained by quenching from the melt in combined classical and Car-Parrinello molecular dynamics simulations. The calculated photoelastic coefficients are in good agreement with experimental data. In particular, the calculation reproduces quantitatively the decrease of the photoelastic response induced by the insertion of Na, as measured experimentally.\n The extension to NS3 of a "},"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":"cond-mat/0407243","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2004-07-09T15:38:17Z","cross_cats_sorted":[],"title_canon_sha256":"78cf3c1e91521bcb5b7491eb7674e98d4221b18561b0598fb2b6e7cb4d1c89d1","abstract_canon_sha256":"e342f149440f02920832c61502e552e74de349e094939a360442175f8a430016"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:53.847178Z","signature_b64":"vrMsN5YhjuUNu7cru3dt+WdA5K3uWUiyvT00xAd+g9xtgUBGfeG4Y/a2OUX6OWQ6sa8NaXOpC3T1qDhiHqzeAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"869c1c951a0a4b3c883babacdcbaf21f18ea4893b10c501c3ef08178cad67abb","last_reissued_at":"2026-05-18T01:06:53.846750Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:53.846750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Photoelasticity of sodium silicate glass from first principles","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. Donadio, F. Tassone, M. Bernasconi","submitted_at":"2004-07-09T15:38:17Z","abstract_excerpt":"Based on density-functional perturbation theory we have computed the photoelastic tensor of a model of sodium silicate glass of composition (Na$_2$O)$_{0.25}$(SiO$_2$)$_{0.75}$ (NS3). The model (containig 84 atoms) is obtained by quenching from the melt in combined classical and Car-Parrinello molecular dynamics simulations. The calculated photoelastic coefficients are in good agreement with experimental data. In particular, the calculation reproduces quantitatively the decrease of the photoelastic response induced by the insertion of Na, as measured experimentally.\n The extension to NS3 of a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0407243","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":"cond-mat/0407243","created_at":"2026-05-18T01:06:53.846809+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0407243v1","created_at":"2026-05-18T01:06:53.846809+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0407243","created_at":"2026-05-18T01:06:53.846809+00:00"},{"alias_kind":"pith_short_12","alias_value":"Q2OBZFI2BJFT","created_at":"2026-05-18T12:25:52.687210+00:00"},{"alias_kind":"pith_short_16","alias_value":"Q2OBZFI2BJFTZCB3","created_at":"2026-05-18T12:25:52.687210+00:00"},{"alias_kind":"pith_short_8","alias_value":"Q2OBZFI2","created_at":"2026-05-18T12:25:52.687210+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/Q2OBZFI2BJFTZCB3VOWNZOXSD4","json":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4.json","graph_json":"https://pith.science/api/pith-number/Q2OBZFI2BJFTZCB3VOWNZOXSD4/graph.json","events_json":"https://pith.science/api/pith-number/Q2OBZFI2BJFTZCB3VOWNZOXSD4/events.json","paper":"https://pith.science/paper/Q2OBZFI2"},"agent_actions":{"view_html":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4","download_json":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4.json","view_paper":"https://pith.science/paper/Q2OBZFI2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0407243&json=true","fetch_graph":"https://pith.science/api/pith-number/Q2OBZFI2BJFTZCB3VOWNZOXSD4/graph.json","fetch_events":"https://pith.science/api/pith-number/Q2OBZFI2BJFTZCB3VOWNZOXSD4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4/action/storage_attestation","attest_author":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4/action/author_attestation","sign_citation":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4/action/citation_signature","submit_replication":"https://pith.science/pith/Q2OBZFI2BJFTZCB3VOWNZOXSD4/action/replication_record"}},"created_at":"2026-05-18T01:06:53.846809+00:00","updated_at":"2026-05-18T01:06:53.846809+00:00"}