2025/12/18 by Tatsuo Shibata, Shibata, Tatsuo
Physics and Astronomy · Biochemistry, Genetics and Molecular Biology · Mathematics · #Micro and Nano Robotics #Cellular Mechanics and Interactions #Mathematical Biology Tumor Growth
paper · pdf · doi:10.48550/arxiv.2512.16267
In biological systems, active agents such as actomyosin and cells move and interact on curved surfaces, exhibiting diverse phenomena. These observations have motivated studies of how curvature shapes their collective behavior. Here, using a geometric framework, a minimal model is presented for interacting active agents on curved surfaces with Vicsek-like polar alignment. A transition between disordered and ordered states occurs on spheres as well as on oblate and prolate spheroids. As the deviation from sphericity increases, the transition point shifts to higher alignment strengths, and swarming localizes to an equatorial belt away from the poles, indicating that curvature heterogeneity influences the emergence of the polar-ordered state.