{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3WAWQNO2OQNXBZYRC75M4A45YR","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":"6b5395f38be2dcb6051f0329eef67a2264b7b0f29877e2cd4cfe39a68aced026","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-09-13T09:59:02Z","title_canon_sha256":"69664d9460fb46605c9e91764da29357967ee622e096904b59f3dc458e7b701b"},"schema_version":"1.0","source":{"id":"1209.2837","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.2837","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"arxiv_version","alias_value":"1209.2837v3","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2837","created_at":"2026-05-18T01:54:29Z"},{"alias_kind":"pith_short_12","alias_value":"3WAWQNO2OQNX","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"3WAWQNO2OQNXBZYR","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"3WAWQNO2","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:854c85b565af5d608783ceb616496be7d93af55c2c4ded16fe93fe0dbb1d1231","target":"graph","created_at":"2026-05-18T01:54:29Z","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":"One of the most noticeable collective motion of non-cohesive granular matter is clustering under certain conditions. In particular, when a quasi-two-dimensional monolayer of mono-disperse non-cohesive particles is vertically vibrated, a solid-liquid-like transition occurs when the driving amplitude exceeds a critical value. Here, the physical mechanism underlying particle clustering relies on the strong interactions mediated by grain collisions, rather than on grain-grain cohesive forces. In average, the solid cluster resembles a drop, with a striking circular shape. We experimentally investig","authors_text":"Gustavo Castillo, Li-Hua Luu, Nicol\\'as Mujica, Rodrigo Soto","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-09-13T09:59:02Z","title":"Capillary-like Fluctuations of a Solid-Liquid Interface in a Non-Cohesive Granular System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2837","kind":"arxiv","version":3},"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":"sha256:50eda7914617327afe2d0afb4d72e6791ae748fe644d74e3bcc70e30da459b8f","target":"record","created_at":"2026-05-18T01:54:29Z","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":"6b5395f38be2dcb6051f0329eef67a2264b7b0f29877e2cd4cfe39a68aced026","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-09-13T09:59:02Z","title_canon_sha256":"69664d9460fb46605c9e91764da29357967ee622e096904b59f3dc458e7b701b"},"schema_version":"1.0","source":{"id":"1209.2837","kind":"arxiv","version":3}},"canonical_sha256":"dd816835da741b70e71117face039dc4593987c787594ef8b4cc0cf2632a43ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dd816835da741b70e71117face039dc4593987c787594ef8b4cc0cf2632a43ad","first_computed_at":"2026-05-18T01:54:29.577191Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:29.577191Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y2i7X9y72V5VOt0n+I2uwSh9NPZ0FJPPp84mEKHLtEpjcTI2E9Rx/UJuXMJmYy6ySCThXX+9kgXFd71K8BKgDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:29.577840Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.2837","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50eda7914617327afe2d0afb4d72e6791ae748fe644d74e3bcc70e30da459b8f","sha256:854c85b565af5d608783ceb616496be7d93af55c2c4ded16fe93fe0dbb1d1231"],"state_sha256":"dd81d5942dbdc38c11127f6cbdd22248821fc46b56ecdadb0756084c1c332a2b"}