The norms of the ME approach and the LE simulation versus the operation time of computer.
The 2D metastable potential with ω r = 9.0, ω b = 9.0, x r = −1.0, ω12 = 0.5, and ω22 = 8.0.
The probability density function of particle along the x 1-direction in the 2D metastable potential at t = 5.0. The above and blow figures are calculated by the ME approach and Langevin simulation of test particles, respectively.
Time-dependent escape rate of the particle calculated by two methods.
The total MC costs and comparative time for the 2D escape rate as functions of temperature for two methods. The open squares and circles are the results of Langevin simulation and ME approach, respectively. The parameters used are N = 1.0 × 105 and Δt = 0.01, others are written in Fig. 2 .
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