Integrable fishnet circuits and Brownian solitonsKrajnik, Žiga (Avtor) Ilievski, Enej (Avtor) Prosen, Tomaž (Avtor) Héry, Benjamin J. A. (Avtor) Pasquier, Vincent (Avtor) integrabilityintegrable systemssolitonsWe introduce classical many-body dynamics on a one-dimensional lattice comprising local two-body maps arranged on discrete space-time mesh that serve as discretizations of Hamiltonian dynamics with arbitrarily time-varying coupling constants. Time evolution is generated by passing an auxiliary degree of freedom along the lattice, resulting in a 'fishnet' circuit structure. We construct integrable circuits consisting of Yang-Baxter maps and demonstrate their general properties, using the Toda and anisotropic Landau-Lifschitz models as examples. Upon stochastically rescaling time, the dynamics is dominated by fluctuations and we observe solitons undergoing Brownian motion.20252026-02-26 14:42:55Članek v reviji179914sl