{"paper":{"title":"Splitting probabilities of confined chiral active Brownian particles","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Channel geometry, activity, and chirality together set the probabilities that active particles escape through one boundary versus another.","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Sarafa A. Iyaniwura, Zhiwei Peng","submitted_at":"2026-03-13T21:57:11Z","abstract_excerpt":"Active particles exhibit self-propulsion, leading to transport behavior that differs fundamentally from passive Brownian motion. In confined or structured domains, activity strongly influence escape probabilities and first-passage behavior. Understanding these effects is essential for describing transport in biological microenvironments, microfluidic devices, and heterogeneous media. In this work, leveraging the backward Fokker--Planck equation, we investigate the splitting probability of chiral active Brownian particles in confined domains, focusing on both a one-dimensional interval and a tw"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We demonstrate how channel geometry, particle activity, and chirality modulate the likelihood of escape through different boundaries.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The Fick-Jacobs reduction yields effective transport equations along the axial direction for small aspect ratios in corrugated channels, assuming transverse degrees of freedom can be integrated out without significant error.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Splitting probabilities of confined chiral active Brownian particles depend on geometry, activity, and chirality, with exact 1D solutions in asymptotic regimes and effective 1D models via Fick-Jacobs reduction in narrow channels.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Channel geometry, activity, and chirality together set the probabilities that active particles escape through one boundary versus another.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"05511dcc54e3e379397f8fd8ad00044797655078d571f4bb80fe3fa8dbb52d20"},"source":{"id":"2603.13621","kind":"arxiv","version":2},"verdict":{"id":"c1a27542-6a48-4137-ab54-83aedf2d2bbd","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T10:58:14.330089Z","strongest_claim":"We demonstrate how channel geometry, particle activity, and chirality modulate the likelihood of escape through different boundaries.","one_line_summary":"Splitting probabilities of confined chiral active Brownian particles depend on geometry, activity, and chirality, with exact 1D solutions in asymptotic regimes and effective 1D models via Fick-Jacobs reduction in narrow channels.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The Fick-Jacobs reduction yields effective transport equations along the axial direction for small aspect ratios in corrugated channels, assuming transverse degrees of freedom can be integrated out without significant error.","pith_extraction_headline":"Channel geometry, activity, and chirality together set the probabilities that active particles escape through one boundary versus another."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2603.13621/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":50,"sample":[{"doi":"","year":2010,"title":"Rogers S S, Flores-Rodriguez N, Allan V J, Woodman P G and Waigh T A 2010 Phys. 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