Noise-Induced Phase Transition: Zero-Dimensional Brownian Particles Varying between Ergodicity and Nonergodicity |
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Authors: | BAI Zhan-Wu |
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Institution: | Department of Mathematics and Physics, North China Electric Power University, Baoding 071003 |
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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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Keywords: | 05 40 Jc 05 70 Fh 05 40 Ca |
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