{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:KT4AYHOWIBVNX4GZA7CHTEZNQI","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"dabb442b2d1835675ed173a9b62c962defe3c40a7380d7607a066880c79d216c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-05T08:28:11Z","title_canon_sha256":"df80476b76d285b2325af8b804babb78448548babdac0bb519870757049f39ff"},"schema_version":"1.0","source":{"id":"1804.01729","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.01729","created_at":"2026-05-18T00:12:52Z"},{"alias_kind":"arxiv_version","alias_value":"1804.01729v2","created_at":"2026-05-18T00:12:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.01729","created_at":"2026-05-18T00:12:52Z"},{"alias_kind":"pith_short_12","alias_value":"KT4AYHOWIBVN","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_16","alias_value":"KT4AYHOWIBVNX4GZ","created_at":"2026-05-18T12:32:33Z"},{"alias_kind":"pith_short_8","alias_value":"KT4AYHOW","created_at":"2026-05-18T12:32:33Z"}],"graph_snapshots":[{"event_id":"sha256:44a1f11c0264735d02a9da28606e9be771ff7ede3db6e0dddba1c9b53ba2a9f9","target":"graph","created_at":"2026-05-18T00:12:52Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Lattice thermal conductivities of two SiO$_2$ polymorphs, i.e., $\\alpha$-quartz (low) and $\\alpha$-cristobalite (low), were studied using first-principles anharmonic phonon calculation and linearized phonon Boltzmann transport equation. Although $\\alpha$-quartz and $\\alpha$-cristobalite have similar phonon densities of states, phonon frequency dependencies of phonon group velocities and lifetimes are dissimilar, which results in largely different anisotropies of the lattice thermal conductivities. For $\\alpha$-quartz and $\\alpha$-cristobalite, distributions of the phonon lifetimes effective to","authors_text":"Atsushi Togo, Isao Tanaka, Keiyu Mizokami","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-05T08:28:11Z","title":"Lattice thermal conductivities of two SiO$_2$ polymorphs by first-principles calculation and phonon Boltzmann transport equation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.01729","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:78983f816b19f84d7e13e5be71e918a9521a0b5f9452698721b6f0de54ac9e09","target":"record","created_at":"2026-05-18T00:12:52Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"dabb442b2d1835675ed173a9b62c962defe3c40a7380d7607a066880c79d216c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-05T08:28:11Z","title_canon_sha256":"df80476b76d285b2325af8b804babb78448548babdac0bb519870757049f39ff"},"schema_version":"1.0","source":{"id":"1804.01729","kind":"arxiv","version":2}},"canonical_sha256":"54f80c1dd6406adbf0d907c479932d820c4fb05525e9d6f8a0392e0469abe5ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54f80c1dd6406adbf0d907c479932d820c4fb05525e9d6f8a0392e0469abe5ea","first_computed_at":"2026-05-18T00:12:52.544697Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:52.544697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MYvsMT7dOJA+bzgPLKwOoOfKZ2MSJbdN+nk+GkniJC9QOZ+vnbY0Q8H07f4QL8BwMZ52XvwA28hEiA9qDYqdAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:52.545263Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.01729","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78983f816b19f84d7e13e5be71e918a9521a0b5f9452698721b6f0de54ac9e09","sha256:44a1f11c0264735d02a9da28606e9be771ff7ede3db6e0dddba1c9b53ba2a9f9"],"state_sha256":"cada9dc04ecc9660964fc32e35abda0cd83f345b5707477aa98859e0b4579dc2"}