Simple models of active particles: Pattern formation and phase transitions

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• Demian Levis, Barcelone University
• Tuesday 22 February 2022, 13:00-14:00
• Center for Mathematical Sciences, Lecture room MR11, or https://maths-cam-ac-uk.zoom.us/j/98016675669.

If you have a question about this talk, please contact Camille Scalliet.

Active matter comprises a wide variety of systems characterized by the continuous consumption of energy of its elementary constituents, typically converted into directed motion. As a result, active matter evolves out-of-equilibrium, lifting most of the constraints imposed by equilibrium statistical mechanics. One of the common features of these systems, is their (sometimes spectacular) collective self-organization in space and time, eventually leading to non-equilibrium phase transitions. This naturally arises the question: can we classify the large scale behavior of active systems within a limited number of ‘universality classes’, represented by some minimal models? Here I will present an overview of the collective behavior of simple models of chiral and non-chiral active particles with excluded volume interactions, in the presence (or absence) of velocity-aligning torques of different nature. I will discuss what I believe are some general features of these systems by comparing results obtained from particle-based simulations, continuum theories and recent experiments of spinning colloidal suspensions.

This talk is part of the DAMTP Statistical Physics and Soft Matter Seminar series.

This talk is included in these lists:

• All CMS events
• Center for Mathematical Sciences, Lecture room MR11, or https://maths-cam-ac-uk.zoom.us/j/98016675669
• DAMTP Statistical Physics and Soft Matter Seminar
• Soft Matter
• bld31

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