{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:PEVQ6NSYS4X4RFUSX4QCWPU4G7","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":"60a481fc41652bc43e83f64af763b2e713e2b4d32ee2117af7f9478618147343","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-10-21T16:38:15Z","title_canon_sha256":"67e4d939c56d3cc0dd46c2f671b03163e101354ffd8c0d1e40b10237f1b4533b"},"schema_version":"1.0","source":{"id":"cond-mat/0210463","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0210463","created_at":"2026-07-04T16:33:14Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0210463v1","created_at":"2026-07-04T16:33:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0210463","created_at":"2026-07-04T16:33:14Z"},{"alias_kind":"pith_short_12","alias_value":"PEVQ6NSYS4X4","created_at":"2026-07-04T16:33:14Z"},{"alias_kind":"pith_short_16","alias_value":"PEVQ6NSYS4X4RFUS","created_at":"2026-07-04T16:33:14Z"},{"alias_kind":"pith_short_8","alias_value":"PEVQ6NSY","created_at":"2026-07-04T16:33:14Z"}],"graph_snapshots":[{"event_id":"sha256:b0f092847673e76f0680bcaa2d375313c72b2b4df595b774933a8eaa2540eb0a","target":"graph","created_at":"2026-07-04T16:33:14Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/0210463/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The stability of MgH$_2$ has been studied up to 20~GPa using density-functional total-energy calculations. At ambient pressure $\\alpha$-MgH${_2}$ takes a TiO$_2$-rutile-type structure. $\\alpha$-MgH$_2$ is predicted to transform into $\\gamma$-MgH${_2}$ at 0.39~GPa. The calculated structural data for $\\alpha$- and $\\gamma$-MgH${_2}$ are in very good agreement with experimental values. At equilibrium the energy difference between these modifications is very small, and as a result both phases coexist in a certain volume and pressure field. Above 3.84~GPa $\\gamma$-MgH${_2}$ transforms into $\\beta$-","authors_text":"A. Kjekshus, H. Fjellv{\\aa}g, P. Ravindran, P. Vajeeston","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-10-21T16:38:15Z","title":"Pressure-induced structural transitions in MgH${_2}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0210463","kind":"arxiv","version":1},"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":"sha256:3266f7b2abda0911854b12a607e7a3f479f9c792f407ef26772442465a6bcbc4","target":"record","created_at":"2026-07-04T16:33:14Z","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":"60a481fc41652bc43e83f64af763b2e713e2b4d32ee2117af7f9478618147343","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2002-10-21T16:38:15Z","title_canon_sha256":"67e4d939c56d3cc0dd46c2f671b03163e101354ffd8c0d1e40b10237f1b4533b"},"schema_version":"1.0","source":{"id":"cond-mat/0210463","kind":"arxiv","version":1}},"canonical_sha256":"792b0f3658972fc89692bf202b3e9c37df37f09b20fe4214f95797c226005e2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"792b0f3658972fc89692bf202b3e9c37df37f09b20fe4214f95797c226005e2a","first_computed_at":"2026-07-04T16:33:14.507508Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:33:14.507508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pUlgM0JNHYgCfrPpjiKEx/KH1+DmY9itAzMJJp73qS7s4ULm/QEgYbOOyim4HWNPi1e8Ifo+7ek15e9rqQgiBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:33:14.507902Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0210463","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3266f7b2abda0911854b12a607e7a3f479f9c792f407ef26772442465a6bcbc4","sha256:b0f092847673e76f0680bcaa2d375313c72b2b4df595b774933a8eaa2540eb0a"],"state_sha256":"adff1c930aa11889973f5c8770215f980e55853a4415c5556ffdc62c7b59f0c7"}