{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZUVAXLNYMFTFRKBVECND3ABXXW","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":"92ff4e9c0cea8159ce830baa6afc0850f4002b07c7ecdb5295714584bb474256","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-02-17T02:22:27Z","title_canon_sha256":"2a2a1d5c73bbf7f83669e3db6e121029b76de6a17dcc4e45a6b97520af6158d1"},"schema_version":"1.0","source":{"id":"1602.05271","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.05271","created_at":"2026-05-18T00:06:06Z"},{"alias_kind":"arxiv_version","alias_value":"1602.05271v2","created_at":"2026-05-18T00:06:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.05271","created_at":"2026-05-18T00:06:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZUVAXLNYMFTF","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZUVAXLNYMFTFRKBV","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZUVAXLNY","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:80a4c169807ec7f4f2e7981ab430da928ccd964e95cb33290267ced4a4bd709a","target":"graph","created_at":"2026-05-18T00:06:06Z","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 show that memory, in the form of underdamped angular dynamics, is a crucial ingredient for the collective properties of self-propelled particles. Using Vicsek-style models with an Ornstein-Uhlenbeck process acting on angular velocity, we uncover a rich variety of collective phases not observed in usual overdamped systems, including vortex lattices and active foams. In a model with strictly nematic interactions the smectic arrangement of Vicsek waves giving rise to global polar order is observed. We also provide a calculation of the effective interaction between vortices in the case where a ","authors_text":"Hugues Chat\\'e, Igor S. Aranson, Ken H. Nagai, Raul Montagne, Yutaka Sumino","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-02-17T02:22:27Z","title":"Collective Motion of Self-Propelled Particles with Memory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.05271","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:f4c07312eeb1d8c64b9f191406d2b53b03d7da9dabe4bfa381e98db744621e3f","target":"record","created_at":"2026-05-18T00:06:06Z","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":"92ff4e9c0cea8159ce830baa6afc0850f4002b07c7ecdb5295714584bb474256","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-02-17T02:22:27Z","title_canon_sha256":"2a2a1d5c73bbf7f83669e3db6e121029b76de6a17dcc4e45a6b97520af6158d1"},"schema_version":"1.0","source":{"id":"1602.05271","kind":"arxiv","version":2}},"canonical_sha256":"cd2a0badb8616658a835209a3d8037bd876c8ca7285acb712b44e93e96e63652","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd2a0badb8616658a835209a3d8037bd876c8ca7285acb712b44e93e96e63652","first_computed_at":"2026-05-18T00:06:06.581959Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:06.581959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QyMVww26d991W68gyz8j/GiMCR9X+6//nvwLc1HGw/wduu6Sjo+2N5hlsZYPoqOQcZ4YWgJqRw+ZjK1RDbxiAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:06.582481Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.05271","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4c07312eeb1d8c64b9f191406d2b53b03d7da9dabe4bfa381e98db744621e3f","sha256:80a4c169807ec7f4f2e7981ab430da928ccd964e95cb33290267ced4a4bd709a"],"state_sha256":"4a2b62eb9cac2899c4714338709018e145e757ed99a81b949d456f197707a439"}