Tootfinder

Intermediate Interaction Strategies for Collective Behavior
Y. Kikuchi, M. Iwamoto
https://arxiv.org/abs/2507.09457 https://arxiv.org…

Intermediate Interaction Strategies for Collective Behavior
From bird flocks and fish schools to migrating cell sheets, collective motion is a ubiquitous biological phenomenon that inspires quantitative modeling through self-propelled particle (SPP) frameworks. Conventional SPP models prescribe either distance-based (metric) or rank-based (topological) interactions; however, empirical studies indicate that real groups may blend both types of interaction. Motivated by this graded perception, we introduce a new three-dimensional SPP model in which metric …

Noisy active matter
Atanu Chatterjee, Tuhin Chakrabortty, Saad Bhamla
https://arxiv.org/abs/2508.16031 https://arxiv.org/pdf/2508.16031

Noisy active matter
Noise threads every scale of the natural world. Once dismissed as mere background hiss, it is now recognized as both a currency of information and a source of order in systems driven far from equilibrium. From nanometer-scale motor proteins to meter-scale bird flocks, active collectives harness noise to break symmetry, explore decision landscapes, and poise themselves at the cusp where sensitivity and robustness coexist. We review the physics that underpins this paradox: how energy-consuming fe…