
The press release describes the results of the work of Paweł Żuk, who conducts a project Stationary states out of equilibrium in various physical systems under PD2PI. He studies a special case of thermodynamic nonequilibrium state: a stationary state, which a physical system can achieve e.g., under a constant external forcing. Paweł Żuk is interested in finding and examining an extreme principle that characterizes such system. He focuses on the energy of the system instead of the entropy. He aims to study three systems in stationary state under external forcing that have different underlying physics: Fermi-Ulam-Pasta-Tsingou model, gas flow in a channel with an obstacle and ionic solution in the vicinity of the oscillatory electrode.