THERMALLY ACTIVATED ESCAPE CONTROLLED BY COLORED MULTIPLICATIVE NOISE

被引:22
作者
MARCHESONI, F
GAMMAITONI, L
MENICHELLASAETTA, E
SANTUCCI, S
机构
[1] UNIV PERUGIA, DIPARTIMENTO FIS, I-06100 PERUGIA, ITALY
[2] UNIV CAMERINO, DIPARTIMENTO MATEMAT & FIS, I-62032 CAMERINO, ITALY
[3] IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY
关键词
D O I
10.1016/0375-9601(95)00240-4
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Thermally driven escape over a barrier which fluctuates with Gaussian statistics is studied by means of analog simulation. The phenomenon of resonant activation [C.R. Doering and J.C. Gadoua, Phys. Rev. Lett. 69 (1992) 2318] occurs when the correlation-time of the barrier fluctuations is increased without changing the amplitude. The dependence of the relevant escape time on the fluctuation variance exhibits a number of properties, independent of the potential shape, which eluded previous investigations.
引用
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页码:275 / 280
页数:6
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