Regensburg 2025 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 4: Focus Session: Nonlinear Dynamics and Stochastic Processes – Advances in Theory and Applications I

Monday, March 17, 2025, 09:30–13:00, H43

Deterministic chaos and stochastic processes are often seen as opposites. However, not only do they share the aspect of being mechanisms for irregular temporal fluctuations, but more importantly, the theory of stochastic processes has helped to understand and quantify many aspects of chaos. Deterministic diffusion, intermittency, long-range temporal correlations can be generated by simple deterministic systems, but are conveniently characterized by concepts of stochastic processes. In both classes of systems, the inclusion of time delays in feedbacks through memory kernels has introduced additional phenomena, and more recently non-normalizable distributions have been found as causes of ageing. While a unified approach to chaos and stochastics is fascinating and satisfying from a theoretical point of view, it also has surprisingly strong application relevance. Examples include the study of turbulence, the nonlinear dynamics of wind turbines, industrial processes for metal milling and turning, laser dynamics, cardiac dynamics, and neuronal systems.

Organized by Robert Magerle (Chemnitz) and Holger Kantz (Dresden)

	09:30	DY 4.1	Welcome and Remarks — •Robert Magerle, Holger Kantz, and Theo Geisel
	09:45	DY 4.2	Invited Talk: Physical application of infinite ergodic theory — •Eli Barkai
	10:15	DY 4.3	Towards a model-free inference of hidden states and transition pathways — •Xizhu Zhao, Dmitrii E. Makarov, and Aljaž Godec
	10:30	DY 4.4	Interaction statistics in persistent Lotka-Volterra communities — •Joseph Baron, Thomas Jun Jewell, Christopher Ryder, and Tobias Galla
	10:45	DY 4.5	Reduced order stochastic modeling of turbulent passive scalar mixing — Abhishek Joshi, Tommy Starick, •Marten Klein, and Heiko Schmidt
	11:00	DY 4.6	Which methods are best suited for predicting chaotic time series? — •Ulrich Parlitz
	11:15		15 min. break
	11:30	DY 4.7	Invited Talk: Modelling the movements of organisms: Movement ecology meets active particles and anomalous diffusion — •Rainer Klages
	12:00	DY 4.8	Self-diffusion anomalies of an odd tracer in soft-core media — Pietro Luigi Muzzeddu, •Erik Kalz, Andrea Gambassi, Abhinav Sharma, and Ralf Metzler
	12:15	DY 4.9	Memory effects and non-linear responses in colloidal depinning — Arthur V. Straube and •Felix Höfling
	12:30	DY 4.10	Non-Gaussian random forces in the generalized Langevin equation — •Hélène A. Colinet and Roland R. Netz
	12:45	DY 4.11	Chemo-mechanical motility modes of partially wetting liquid droplets — •Florian Voss and Uwe Thiele