Regensburg 2025 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 24: Focus Session: Broken Symmetries in Statistical Physics - Dynamics of Odd Systems

Wednesday, March 19, 2025, 15:00–18:30, H43

In recent years, the effect of broken microscopic symmetries on emergent mesoscopic and macroscopic behavior has gained significant attention in non-equilibrium statistical physics. For example, breaking Newton’s third law leads to so-called "non-reciprocal interactions" among species and gives rise to odd transport coefficients. These are primarily investigated in active systems. However, even with Newton’s third law valid, odd transport can emerge, and even in equilibrium systems. In both cases, many novel phenomena have been reported over the last years, such as asymmetric clustering, oscillatory phase behavior, crowding-enhanced diffusion in in- and out-of-equilibrium systems, as well as off-diagonal correlation functions, topologically protected edge flows, and many more. With this symposium, we bring together the communities working on odd transport systems in the context of (non)equilibrium statistical physics, to stimulate discussions about the physical background and implications of such broken symmetries in transport-related phenomena.

Organized by Erik Kalz (Potsdam), Ralf Metzler (Potsdam), and Abhinav Sharma (Augsburg)

	15:00	DY 24.1	Invited Talk: Dynamics of odd and chiral active systems — •Hartmut Löwen
	15:30	DY 24.2	A route from force to velocity autocorrelation in over-damped odd dynamic and its applications to the study of diffusion — Filippo Faedi and •Abhinav Sharma
	15:45	DY 24.3	A model collective system made of spinning micro-disks: from fundamentals to microrobot swarms — •Gaurav Gardi
	16:00	DY 24.4	Active pattern formation emergent from single-species nonreciprocity — Zhi-Feng Huang, •Michael te Vrugt, Jonas Mayer Martins, Raphael Wittkowski, and Hartmut Löwen
	16:15	DY 24.5	Dance of odd-diffusive particles: A Fourier approach — •Amelie Langer, Abhinav Sharma, Ralf Metzler, and Erik Kalz
	16:30	DY 24.6	Odd mobility in interacting particle systems — •Erik Kalz, Shashank Ravichandir, Johannes Birkenmeier, Ralf Metzler, and Abhinav Sharma
	16:45	DY 24.7	Invited Talk: Odd dynamics and universal flows of passive objects in a chiral active fluid — •Cory Hargus, Federico Ghimenti, Julien Tailleur, and Frédéric van Wijland
	17:15	DY 24.8	Vortex formation and odd viscosity in a chiral active fluid — •Joscha Mecke, Yongxiang Gao, Gerhard Gompper, and Marisol Ripoll
	17:30	DY 24.9	Chirotactic response of microswimmers in 3D chiral active fluids with odd viscosity — •Yuto Hosaka, Michalis Chatzittofi, Ramin Golestanian, and Andrej Vilfan
	17:45	DY 24.10	Chirality and symmetry breaking in Dictyostelium Discoideum: Probing odd dynamics in cellular behavior — •Fereydoon Taheri
	18:00	DY 24.11	Invited Talk: How to model frictional contacts in sheared and active colloids — •Friederike Schmid, Kay Hofmann, Kay-Robert Dormann, and Benno Liebchen