{"paper":{"title":"Collective dynamics of active matter with orientation-weighted alignment","license":"http://creativecommons.org/licenses/by/4.0/","headline":"A simple orientation-weighted alignment rule generates multiple collective regimes in self-propelled particles by tuning its strength alone.","cross_cats":["nlin.PS"],"primary_cat":"cond-mat.soft","authors_text":"Alexander Yakimenko, Bohdan Dobosh","submitted_at":"2026-05-17T19:48:32Z","abstract_excerpt":"We study an agent-based model of self-propelled particles with a velocity-dependent alignment rule. This interaction is orientation weighted and acts along the line connecting neighboring particles. Tuning the alignment strength produces several distinct collective regimes, including disordered gas-like motion, coherent flocking, jammed high-density states, and densely ordered moving clusters with active-crystal-like behavior. These results show that a simple local alignment rule can generate a broad range of nonequilibrium collective dynamics within a single microscopic model."},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Tuning the alignment strength produces several distinct collective regimes, including disordered gas-like motion, coherent flocking, jammed high-density states, and densely ordered moving clusters with active-crystal-like behavior. These results show that a simple local alignment rule can generate a broad range of nonequilibrium collective dynamics within a single microscopic model.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The model assumes that the alignment interaction is strictly orientation-weighted and acts exactly along the line connecting neighboring particles; if this geometric and directional weighting is not physically realized or if boundary/periodic conditions dominate the observed phases, the claimed breadth of regimes would not follow from the stated rule.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"An agent-based model with orientation-weighted velocity-dependent alignment generates disordered, flocking, jammed, and active-crystal-like collective phases by varying alignment strength.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A simple orientation-weighted alignment rule generates multiple collective regimes in self-propelled particles by tuning its strength alone.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"4fcb4816393d5050e5197a206c1c278259d223513eb27f13d2edaab579320d9c"},"source":{"id":"2605.17627","kind":"arxiv","version":1},"verdict":{"id":"2fa58746-08a0-4e4a-85fa-ea2b6aa476d2","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T22:03:43.481744Z","strongest_claim":"Tuning the alignment strength produces several distinct collective regimes, including disordered gas-like motion, coherent flocking, jammed high-density states, and densely ordered moving clusters with active-crystal-like behavior. These results show that a simple local alignment rule can generate a broad range of nonequilibrium collective dynamics within a single microscopic model.","one_line_summary":"An agent-based model with orientation-weighted velocity-dependent alignment generates disordered, flocking, jammed, and active-crystal-like collective phases by varying alignment strength.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The model assumes that the alignment interaction is strictly orientation-weighted and acts exactly along the line connecting neighboring particles; if this geometric and directional weighting is not physically realized or if boundary/periodic conditions dominate the observed phases, the claimed breadth of regimes would not follow from the stated rule.","pith_extraction_headline":"A simple orientation-weighted alignment rule generates multiple collective regimes in self-propelled particles by tuning its strength alone."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.17627/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"cited_work_retraction","ran_at":"2026-05-19T22:52:44.297974Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T22:31:19.518217Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T22:12:15.524773Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T21:33:23.561534Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T21:21:57.486375Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"04fcce70a577f6e50f9c8b4a098a756ce1fba8ba3309860c893c3a062d0db274"},"references":{"count":38,"sample":[{"doi":"","year":2010,"title":"Ramaswamy, The mechanics and statistics of active matter, Annual Review of Condensed Matter Physics1, 323 (2010)","work_id":"b3b2186e-e36d-46a4-a2f7-075ad1efb3af","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2018,"title":"´Etienne Fodor and M. C. Marchetti, The statistical physics of active matter: From self-catalytic colloids to living cells, Physica A: Statistical Mechanics and its Ap- plications504, 106 (2018), lect","work_id":"6e08c83f-2ad7-4259-8571-6ca5c0e4fbf5","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2013,"title":"M. C. Marchetti, J.-F. Joanny, S. Ramaswamy, T. B. Liverpool, J. Prost, M. Rao, and R. A. Simha, Hydrody- namics of soft active matter, Rev. Mod. Phys.85, 1143 (2013)","work_id":"0040683a-151d-4e43-9853-51dde584192f","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2012,"title":"T. Sanchez, D. T. N. Chen, S. J. DeCamp, M. Heymann, and Z. Dogic, Spontaneous motion in hierarchically as- sembled active matter, Nature491, 431 (2012)","work_id":"c5f23fe3-a7d7-4317-91b4-db79d93d8d4e","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2013,"title":"A. Bricard, J.-B. Caussin, N. Desreumaux, O. Dauchot, and D. Bartolo, Emergence of macroscopic directed mo- tion in populations of motile colloids, Nature503, 95 (2013)","work_id":"931cf8d5-9aa2-4950-aec4-2435ca9042f7","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":38,"snapshot_sha256":"9aa4b32b2441d91d352138cb9a615d0b6f9dbdd53cab183d9181effae489b73a","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}