Bistable systems: Master equation versus Fokker-Planck modeling
作者： Peter Hanggi , Hermann Grabert , Peter Talkner , Harry Thomas
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摘要: Relaxation and fluctuations of nonlinear macroscopic systems, which are frequently described by means Fokker-Planck or Langevin equations, studied on the basis a master equation. The problem an approximate modeling dynamics is investigated. A new presented superior to conventional method based truncated Kramers-Moyal expansion. approach shown give correct transition rates between deterministically stable states, while overestimates these rates. An application Schl\"ogl models for first- second-order nonequilibrium phase transitions given.
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