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中国物理快报 2008
Noise-Induced Phase Transition: Zero-Dimensional Brownian Particles Varying between Ergodicity and Nonergodicity
Keywords: 05,40,Jc,05,70,Fh,05,40,Ca Abstract: We study in phase space a zero-dimensional system of Brownian particles which move in a periodic potential and subject to an internal time derivativeOrnstein--Uhlenbeck noise. To resolve the Fokker--Planck equation in such a case, we propose an approximate analytical method. The theoretical predictions exhibit a second order noise-induced nonequilibrium phase transition, which is confirmed by numerical simulation results. The phase transition brings the system from an ergodicity to a nonergodicity phase as the potential barrier height decreases.
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