{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:QG2FNEHBC3SZ7NMSMXVTPSIWOE","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":"0d78d106f825e6cbd7d2e2449365deb51b0d8c9a3be688eb1904daf0436d8845","cross_cats_sorted":["cond-mat.str-el","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-05-03T12:46:53Z","title_canon_sha256":"864e7cf53c3a3f6bfcf423310244c280338ade56facc9f0eea0eae19600481fd"},"schema_version":"1.0","source":{"id":"1005.0277","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.0277","created_at":"2026-05-18T04:12:10Z"},{"alias_kind":"arxiv_version","alias_value":"1005.0277v2","created_at":"2026-05-18T04:12:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.0277","created_at":"2026-05-18T04:12:10Z"},{"alias_kind":"pith_short_12","alias_value":"QG2FNEHBC3SZ","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"QG2FNEHBC3SZ7NMS","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"QG2FNEHB","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:77b0e2f3941f2397689ba88c72e9636950a55cb4b4404f7451f7f310b48bbd93","target":"graph","created_at":"2026-05-18T04:12:10Z","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":"Plutonium dioxide is of high technological importance in nuclear fuel cycle and is particularly crucial in long-term storage of Pu-based radioactive waste. Using first-principles density-functional theory, in this paper we systematically study the structural, electronic, mechanical, thermodynamic properties, and pressure induced structural transition of PuO$_{2}$. To properly describe the strong correlation in the Pu $5f$ electrons, the local density approximation$+U$ and the generalized gradient approximation$+U$ theoretical formalisms have been employed. We optimize the $U$ parameter in calc","authors_text":"Bao-Tian Wang, Ping Zhang, Xian-Geng Zhao","cross_cats":["cond-mat.str-el","physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-05-03T12:46:53Z","title":"Ground state properties and high pressure behavior of plutonium dioxide: Systematic density functional calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0277","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":"sha256:932c895c2a6ec225b158ef79821d62547b9b372e054707e554a43ec32a5df26f","target":"record","created_at":"2026-05-18T04:12:10Z","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":"0d78d106f825e6cbd7d2e2449365deb51b0d8c9a3be688eb1904daf0436d8845","cross_cats_sorted":["cond-mat.str-el","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-05-03T12:46:53Z","title_canon_sha256":"864e7cf53c3a3f6bfcf423310244c280338ade56facc9f0eea0eae19600481fd"},"schema_version":"1.0","source":{"id":"1005.0277","kind":"arxiv","version":2}},"canonical_sha256":"81b45690e116e59fb59265eb37c9167101610447267e2d09d3948e0a30387d7b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81b45690e116e59fb59265eb37c9167101610447267e2d09d3948e0a30387d7b","first_computed_at":"2026-05-18T04:12:10.682755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:12:10.682755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SKMmDUo6UOaWIqo1GQnEiKaYlA1mx6g6f3T7l8K3h/FoqlTwmw01w3zP/Vbh8xO6EIy85y7XDfPoSvv85E5TCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:12:10.683281Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.0277","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:932c895c2a6ec225b158ef79821d62547b9b372e054707e554a43ec32a5df26f","sha256:77b0e2f3941f2397689ba88c72e9636950a55cb4b4404f7451f7f310b48bbd93"],"state_sha256":"961a431703b05705392b1dbb9dd391ecd8a06d651709ad79374d3fe131eacfd5"}