{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HPX2SNSRXKS7M5S32IEAUVJCQC","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":"91db5f43445a255ae448f301d4d8d84590b840e215d38ed03b8df55629bab334","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T15:52:08Z","title_canon_sha256":"db55cc5d5219e8d7773f391485ccb960ddacc55cf1faafd57e46eae45e668907"},"schema_version":"1.0","source":{"id":"1504.02720","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.02720","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"arxiv_version","alias_value":"1504.02720v2","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.02720","created_at":"2026-05-18T01:32:00Z"},{"alias_kind":"pith_short_12","alias_value":"HPX2SNSRXKS7","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"HPX2SNSRXKS7M5S3","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"HPX2SNSR","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:4cfe2c2da69bc7d8a9cd4c5a5a056027559a97f1ee22dffac7a65e35728f0903","target":"graph","created_at":"2026-05-18T01:32:00Z","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":"The effect of solute hydrogen on the stability of vacancy clusters in hexagonal closed packed zirconium is investigated with an ab initio approach, including contributions of H vibrations. Atomistic simulations within the density functional theory evidence a strong binding of H to small vacancy clusters. The hydrogen effect on large vacancy loops is modeled through its interaction with the stacking faults. A thermodynamic modeling of H segregation on the various faults, relying on ab initio binding energies, shows that these faults are enriched in H, leading to a decrease of the stacking fault","authors_text":"C\\'eline Varvenne, Emmanuel Clouet, Laurent Proville, Olivier Mackain","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T15:52:08Z","title":"Hydrogen and vacancy clustering in zirconium"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02720","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:ab1c0b350d07f232702e99db28aab7bf74c612544b573a6cbe49d36cfcaa84fd","target":"record","created_at":"2026-05-18T01:32:00Z","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":"91db5f43445a255ae448f301d4d8d84590b840e215d38ed03b8df55629bab334","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-10T15:52:08Z","title_canon_sha256":"db55cc5d5219e8d7773f391485ccb960ddacc55cf1faafd57e46eae45e668907"},"schema_version":"1.0","source":{"id":"1504.02720","kind":"arxiv","version":2}},"canonical_sha256":"3befa93651baa5f6765bd2080a55228090d56ad485dec1b56ed8814c470219aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3befa93651baa5f6765bd2080a55228090d56ad485dec1b56ed8814c470219aa","first_computed_at":"2026-05-18T01:32:00.659734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:00.659734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CGaweiFIE7MR5UQH+T5NDEnzBp0etYrvW41KTUP3IAHUXF6WKzM6GqE131DQ0Rh1oUxoCr3BsnrrOTy/1t/zAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:00.660299Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.02720","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ab1c0b350d07f232702e99db28aab7bf74c612544b573a6cbe49d36cfcaa84fd","sha256:4cfe2c2da69bc7d8a9cd4c5a5a056027559a97f1ee22dffac7a65e35728f0903"],"state_sha256":"729e793d2ba698f2efd5af07a98b070e1f02484994f76684f464dea1f143bebc"}