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Tuesday 03 March 2026, 13:00-14:00
Barrier crossing and rare fluctuations of active particles
- 👤 Speaker: Peter Sollich (University of Göttingen)
- 📅 Date & Time: Tuesday 03 March 2026, 13:00 - 14:00
- 📍 Venue: Center for Mathematical Sciences, Lecture room MR4.
Abstract
We study barrier crossing processes for active particles. Using a low-noise Kramers limit we derive the effective activation barriers for three standard descriptions: active Brownian (ABP), active Ornstein-Uhlenbeck (AOUP) and run-and-tumble particles. We find that, because barrier crossing is dominated by rare fluctuations, there are significant qualitative differences between these. For ABPs one key result is that, for potentials with a symmetry axis, activity can generate optimal escape paths that break this symmetry. Time permitting, extensions to barrier crossing in configuration space, i.e. cage breaking in active glasses, will be discussed with a focus on AOU Ps.
Series This talk is part of the DAMTP Statistical Physics and Soft Matter Seminar series.
Included in Lists
- All CMS events
- bld31
- Center for Mathematical Sciences, Lecture room MR4.
- DAMTP Statistical Physics and Soft Matter Seminar
- Soft Matter
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