{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:N5U6ERLLAFVG5CNDKDMVW3ZNMB","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":"e6ec9837e4a337a958cc21b41a18c57a54f1a4eb647b7e87c63f01f5c909424a","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2008-12-29T15:10:29Z","title_canon_sha256":"b7ea84951dd9f0a19b5e782f263a93350a2e65c21763e50b85dfff561413f66a"},"schema_version":"1.0","source":{"id":"0812.4922","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0812.4922","created_at":"2026-05-18T02:15:03Z"},{"alias_kind":"arxiv_version","alias_value":"0812.4922v1","created_at":"2026-05-18T02:15:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.4922","created_at":"2026-05-18T02:15:03Z"},{"alias_kind":"pith_short_12","alias_value":"N5U6ERLLAFVG","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"N5U6ERLLAFVG5CND","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"N5U6ERLL","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:74b615a5bc47f9d43378f2cc3b2fa5b6d582c6f1726e3f24a1340a2acc3eea74","target":"graph","created_at":"2026-05-18T02:15:03Z","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":"We report a computer-simulation study of the equilibrium phase diagram of a three-dimensional system of particles with a repulsive step potential. The phase diagram is obtained using free-energy calculations. At low temperatures, we observe a number of distinct crystal phases. We show that at certain values of the potential parameters the system exhibits the water-like thermodynamic anomalies: density anomaly and diffusion anomaly. The anomalies disappear with increasing the repulsive step width: their locations move to the region inside the crystalline phase.","authors_text":"Daan Frenkel, N. V. Gribova, V. N. Ryzhov, Yu. D. Fomin","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2008-12-29T15:10:29Z","title":"Waterlike thermodynamic anomalies in a repulsive-step potential system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.4922","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":"sha256:61d1557553de07cbcfa23c3c25f8e229646117071eb8b9c489b0b746a8b7838f","target":"record","created_at":"2026-05-18T02:15:03Z","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":"e6ec9837e4a337a958cc21b41a18c57a54f1a4eb647b7e87c63f01f5c909424a","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2008-12-29T15:10:29Z","title_canon_sha256":"b7ea84951dd9f0a19b5e782f263a93350a2e65c21763e50b85dfff561413f66a"},"schema_version":"1.0","source":{"id":"0812.4922","kind":"arxiv","version":1}},"canonical_sha256":"6f69e2456b016a6e89a350d95b6f2d6072f89b8fc0a15c4e0ae3ae6fbfa9be4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f69e2456b016a6e89a350d95b6f2d6072f89b8fc0a15c4e0ae3ae6fbfa9be4e","first_computed_at":"2026-05-18T02:15:03.698284Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:03.698284Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iZ88+oeV3iaen0DlSrtKxPCwKN4dDxVOdvmjK5/zsP7+DUqqxYPUUOjDVtlq0hFL3W+fqCyQSFdalc5O3xfRBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:03.698622Z","signed_message":"canonical_sha256_bytes"},"source_id":"0812.4922","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61d1557553de07cbcfa23c3c25f8e229646117071eb8b9c489b0b746a8b7838f","sha256:74b615a5bc47f9d43378f2cc3b2fa5b6d582c6f1726e3f24a1340a2acc3eea74"],"state_sha256":"1af94eb5501b732df137d8f54b64e4dc814223318ec8ff41461e6c73e6a02b46"}