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Fluctuation-Induced First Order Transition to Collective Motion
David Martin, Gianmarco Spera, Hugues Chaté +4
The nature of the transition to collective motion in assemblies of aligning self-propelled particles remains a long-standing matter of debate. In this article, we focus on dry acti…
Metastability of Discrete-Symmetry Flocks
Brieuc Benvegnen, Omer Granek, Sunghan Ro +6
We study the stability of the ordered phase of flocking models with a scalar order parameter. Using both the active Ising model and a hydrodynamic description, we show that droplet…
Rheology of active fluids
Alfredo Lanzaro, Luigi Gentile
This chapter on the rheology of active fluids is an attempt to correlate theoretical and experimental work. A considerable amount of theoretical work and most of the experimental d…
Characterization and Control of the Run-and-Tumble Dynamics of {\it Escherichia Coli}
Christina Kurzthaler, Yongfeng Zhao, Nan Zhou +8
We characterize the full spatiotemporal gait of populations of swimming {\it Escherichia coli} using renewal processes to analyze the measurements of intermediate scattering functi…
An Introduction to Motility-Induced Phase Separation
Jérémy O'Byrne, Alexandre Solon, Julien Tailleur +1
Active particles may undergo phase separation when interactions oppose self-propulsion, in the absence of any cohesive forces. The corresponding Motility-Induced Phase Separation (…
Disordered boundaries destroy bulk phase separation in scalar active matter
Ydan Ben Dor, Sunghan Ro, Yariv Kafri +2
We show that disordered boundaries destroy bulk phase separation in scalar active systems in dimension . This is in strong contrast with the equilibrium case where boundar…