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How many dissenters does it take to disorder a flock?
D. Yllanes, M. Leoni, M. C. Marchetti
We consider the effect of introducing a small number of non-aligning agents in a well-formed flock. To this end, we modify a minimal model of active Brownian particles with purely…
Shape and Displacement Fluctuations in Soft Vesicles Filled by Active Particles
Matteo Paoluzzi, Roberto Di Leonardo, M Cristina Marchetti +1
We investigate numerically the dynamics of shape and displacement fluctuations of two-dimensional flexible vesicles filled with active particles. At low concentration most of the a…
Pattern formation in self-propelled particles with density-dependent motility
F. D. C. Farrell, J. Tailleur, D. Marenduzzo +1
We study the behaviour of interacting self-propelled particles, whose self-propulsion speed decreases with their local density. By combining direct simulations of the microscopic m…
Fluctuations and Pattern Formation in Self-Propelled Particles
Shradha Mishra, Aparna Baskaran, M. Cristina Marchetti
We consider a coarse-grained description of a system of self-propelled particles given by hydrodynamic equations for the density and polarization fields. We find that the ordered m…