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DY: Fachverband Dynamik und Statistische Physik

DY 55: Focus Session: Emergent Transport in Active Systems (joint session DY/BP)

Thursday, March 12, 2026, 15:00–18:00, ZEU/0160

Collective motion and directed transport are hallmark phenomena of active matter, arising from the interplay of self-propulsion, interactions, and nonequilibrium fluctuations. Even in the absence of global biases, assemblies of active particles can exhibit spontaneous currents, self-organized chemotaxis, and rectified transport due to broken symmetries or nonlinear feedbacks. Directed transport often emerges in inhomogeneous environments, where variations in particle activity or interaction strength can bias motion and organization. Activity gradients represent a particularly relevant example, providing a tunable mechanism to steer collective motion and pattern formation. These processes link microscopic activity to macroscopic material behavior and transport. This focus session aims to bring together theorists and experimentalists working on the fundamental mechanisms and control of emergent transport in active systems.

Organized by Abhinav Sharma (Augsburg) and Jens-Uwe Sommer (Dresden)

	15:00	DY 55.1	Invited Talk: Out-of-equlibrium synthetic cells: the future of active matter — •Laura Alvarez
	15:30	DY 55.2	Biohybrid active matter: active cargo transport by motile cells — Jan Albrecht, Lara S. Dautzenberg, Manfred Opper, Carsten Beta, and •Robert Großmann
	15:45	DY 55.3	Invited Talk: Chemotactic like behavior in by active Brownian particles: from single particles to to polymers — •Hidde Vuijk
	16:15	DY 55.4	Fluctuation-induced transition in transport of active colloidal cells — •Shashank Ravichandir, Jens-Uwe Sommer, and Abhinav Sharma
	16:30		15 min. break
	16:45	DY 55.5	Invited Talk: From non-reciprocal torques towards shape-flexible and res-ponsive prototypic worms — •Holger Stark and Jeanine Shea
	17:15	DY 55.6	Directed motion of active collectives in activity gradients — •Hossein Vahid, Jens-Uwe Sommer, and Abhinav Sharma
	17:30	DY 55.7	Activity hallmarks in kinetic theory: Exceptional Points, Disorder Regularization, Non-Reciprocal Orientation-Displacement Coupling — •Horst-Holger Boltz and Thomas Ihle
	17:45	DY 55.8	Rouse Polymers in Time-dependent Nonequilibrium Baths — •Bhavesh Valecha and Abhinav Sharma