{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:G5Y63NHDFG7MTMJFJPMEAIQPIA","short_pith_number":"pith:G5Y63NHD","schema_version":"1.0","canonical_sha256":"3771edb4e329bec9b1254bd840220f403f3b2eb5ffcbfb5e8b0afc3324cdf3d6","source":{"kind":"arxiv","id":"1503.05983","version":1},"attestation_state":"computed","paper":{"title":"Thermoelasticity of Fe2+-bearing bridgmanite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrea Floris, Gaurav Shukla, Han Hsu, Matteo Cococcioni, Renata M. Wentzcovitch, Zhongqing Wu","submitted_at":"2015-03-20T03:16:07Z","abstract_excerpt":"We present LDA+U calculations of high temperature elastic properties of bridgmanite with composition (Mg$_{(1-x)}$Fe$_{x}^{2+}$)SiO$_3$ for $0\\le{x}\\le0.125$. Results of elastic moduli and acoustic velocities for the Mg-end member (x=0) agree very well with the latest high pressure and high temperature experimental measurements. In the iron-bearing system, we focus particularly on the change in thermoelastic parameters across the state change that occurs in ferrous iron above $\\sim$30 GPa, often attributed to a high-spin (HS) to intermediate spin (IS) crossover but explained by first principle"},"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":"1503.05983","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-03-20T03:16:07Z","cross_cats_sorted":[],"title_canon_sha256":"99d7fe1e76bbeaf88cfb1709b076f6644b3b04a010c135fadd530a748e0ae099","abstract_canon_sha256":"a675ac45c0b4e4fef6a1bee54f353679d473187afb24de3247e02ab97f6443b3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:50.164454Z","signature_b64":"v2ePCFPsre4zTd3tlsujcbHHRuKAw+RMRYPNoQVg2SlTcdN9j+ijTLdO1hGq6Bk0vIlpcHH6XAZCvqli/6dDDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3771edb4e329bec9b1254bd840220f403f3b2eb5ffcbfb5e8b0afc3324cdf3d6","last_reissued_at":"2026-05-18T01:40:50.163938Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:50.163938Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Thermoelasticity of Fe2+-bearing bridgmanite","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Andrea Floris, Gaurav Shukla, Han Hsu, Matteo Cococcioni, Renata M. Wentzcovitch, Zhongqing Wu","submitted_at":"2015-03-20T03:16:07Z","abstract_excerpt":"We present LDA+U calculations of high temperature elastic properties of bridgmanite with composition (Mg$_{(1-x)}$Fe$_{x}^{2+}$)SiO$_3$ for $0\\le{x}\\le0.125$. Results of elastic moduli and acoustic velocities for the Mg-end member (x=0) agree very well with the latest high pressure and high temperature experimental measurements. In the iron-bearing system, we focus particularly on the change in thermoelastic parameters across the state change that occurs in ferrous iron above $\\sim$30 GPa, often attributed to a high-spin (HS) to intermediate spin (IS) crossover but explained by first principle"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.05983","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":"1503.05983","created_at":"2026-05-18T01:40:50.164018+00:00"},{"alias_kind":"arxiv_version","alias_value":"1503.05983v1","created_at":"2026-05-18T01:40:50.164018+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.05983","created_at":"2026-05-18T01:40:50.164018+00:00"},{"alias_kind":"pith_short_12","alias_value":"G5Y63NHDFG7M","created_at":"2026-05-18T12:29:22.688609+00:00"},{"alias_kind":"pith_short_16","alias_value":"G5Y63NHDFG7MTMJF","created_at":"2026-05-18T12:29:22.688609+00:00"},{"alias_kind":"pith_short_8","alias_value":"G5Y63NHD","created_at":"2026-05-18T12:29:22.688609+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/G5Y63NHDFG7MTMJFJPMEAIQPIA","json":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA.json","graph_json":"https://pith.science/api/pith-number/G5Y63NHDFG7MTMJFJPMEAIQPIA/graph.json","events_json":"https://pith.science/api/pith-number/G5Y63NHDFG7MTMJFJPMEAIQPIA/events.json","paper":"https://pith.science/paper/G5Y63NHD"},"agent_actions":{"view_html":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA","download_json":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA.json","view_paper":"https://pith.science/paper/G5Y63NHD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1503.05983&json=true","fetch_graph":"https://pith.science/api/pith-number/G5Y63NHDFG7MTMJFJPMEAIQPIA/graph.json","fetch_events":"https://pith.science/api/pith-number/G5Y63NHDFG7MTMJFJPMEAIQPIA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA/action/storage_attestation","attest_author":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA/action/author_attestation","sign_citation":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA/action/citation_signature","submit_replication":"https://pith.science/pith/G5Y63NHDFG7MTMJFJPMEAIQPIA/action/replication_record"}},"created_at":"2026-05-18T01:40:50.164018+00:00","updated_at":"2026-05-18T01:40:50.164018+00:00"}