Multibody effects in active particle systems, and what working in large space dimension teaches us
Multibody effects in active particle systems, and what working in large space dimension teaches us
- Event time: 3:00pm until 4:00pm
- Event date: 8th February 2022
- Speaker: Professor Frédéric van Wijland (Laboratoire Matière et Systèmes Complexes, Université de Paris.)
Event details
Systems made of a large number of self-propelled particles live very far from equilibrium, which opens the door to unexpected collective behaviors, such as the motility-induced phase separation (MIPS). While a phenomenological understanding of such phenomena was almost immediately available, microscopics-based approaches are usually difficult to conduct. By embedding these many-body systems in a large-dimensional space, some simplifications occur, and these allow us to pinpoint fundamental physical differences between a conventional equilibrium phase separation driven by pairwise forces, and MIPS, which had eluded phenomenological, coarse-grained, descriptions. These lie in the intrinsically many-body nature of interactions in systems of active particles.
Work done in collaboration with Thibaut Arnoulx de Pirey
Event resources
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