Order and Symmetry Breaking in the Fluctuations of Driven Systems Tizón-Escamilla, Nicolás Pérez-Espigares, Carlos Garrido, Pedro Luis Hurtado, Pablo Ignacio Dynamical phase transitions (DPTs) in the space of trajectories are one of the most intriguing phenomena of nonequilibrium physics, but their nature in realistic high-dimensional systems remains puzzling. Here we observe for the first time a DPT in the current vector statistics of an archetypal two-dimensional (2D) driven diffusive system and characterize its properties using the macroscopic fluctuation theory. The complex interplay among the external field, anisotropy, and vector currents in 2D leads to a rich phase diagram, with different symmetry-broken fluctuation phases separated by lines of first- and second-order DPTs. Remarkably, different types of 1D order in the form of jammed density waves emerge to hinder transport for low-current fluctuations, revealing a connection between rare events and self-organized structures which enhance their probability. 2025-01-30T09:20:44Z 2025-01-30T09:20:44Z 2017-08-31 journal article N. Tizón-Escamilla, C. Pérez-Espigares, P.L. Garrido y P.I. Hurtado. Order and Symmetry-Breaking in the Fluctuations of Driven Systems. Physical Review Letters 119 (9), 090602 (2017). https://hdl.handle.net/10481/101125 https://doi.org/10.1103/PhysRevLett.119.090602 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional American Physical Society (APS)