跨学科物理模型中的亚稳态寿命与噪声抑制
Lifetime of metastable states and suppression of noise in Interdisciplinary Physical Models
摘要：
研究了具有亚稳态的不同物理系统在外部白噪声扰动下的瞬态特性。从理论上预言了具有亚稳态的分段线性涨落势中的两种噪声诱导现象：噪声增强稳定性和共振激活。由于噪声的亚稳态的寿命的增强，和噪声的抑制通过共振激活现象将审查在跨学科的物理模型：（i）动力学的过阻尼约瑟夫森结;（ii）瞬态制度的噪声FitzHugh-Nagumo模型;（iii）人口动力学。
英文摘要：
Transient properties of different physical systems with metastable states perturbed by external white noise have been investigated. Two noise-induced phenomena, namely the noise enhanced stability and the resonant activation, are theoretically predicted in a piece-wise linear fluctuating potential with a metastable state. The enhancement of the lifetime of metastable states due to the noise, and the suppression of noise through resonant activation phenomenon will be reviewed in models of interdisciplinary physics: (i) dynamics of an overdamped Josephson junction; (ii) transient regime of the noisy FitzHugh-Nagumo model; (iii) population dynamics.
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