Regensburg 2025 – scientific programme

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SYQS: Symposium Nonequilibrium Collective Behavior in Open Classical and Quantum Systems

SYQS 1: Nonequilibrium Collective Behavior in Open Classical and Quantum Systems

Thursday, March 20, 2025, 15:00–17:45, H1

Nonequilibrium classical and quantum systems coupled to thermal or (driven) non-equilibrium environments have recently been shown to exhibit rich collective phenomena and phase transitions without equilibrium counterparts. From the classical side, intriguing examples are flocking and phase separation in active matter, but also patterns and bifurcations in driven-diffusive systems and spontaneous parity-time symmetry breaking in systems involving nonreciprocal couplings. From the quantum side much interest has been devoted, e.g., to ordering and phase transitions in non-equilibrium steady states, the formation of time crystals, superradiance, as well as phase transitions or critical behavior in time. The symposium and the accompanying focus session is devoted to connections between the quantum and the classical realms, as they have been explored recently both in theory and experiment.

	15:00	SYQS 1.1	Invited Talk: Active quantum flocks — Reyhaneh Khasseh, Sascha Wald, Roderich Moessner, Christoph Weber, and •Markus Heyl
	15:30	SYQS 1.2	Invited Talk: Robust dynamics and function in stochastic topological systems — •Evelyn Tang
	16:00	SYQS 1.3	Invited Talk: Nonequilibrium Dynamics of Disorder-Driven Ultracold Fermi Gases — •Artur Widera
	16:30		15 min. break
	16:45	SYQS 1.4	Invited Talk: Topological classification of driven-dissipative nonlinear systems — •Oded Zilberberg, Greta Villa, Kilian Seibold, Vincent Dumont, Gianluca Rastelli, Mateusz Michałek, Alexander Eichler, and Javier del Pino
	17:15	SYQS 1.5	Invited Talk: Learning dynamical behaviors in physical systems — •Vincenzo Vitelli