Logarithmic susceptibility and optimal control of large fluctuations

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We analyze the probabilities of large infrequent fluctuations in systems driven by external fields. In a broad range of the field magnitudes, the logarithm of the fluctuation probability is linear in the field magnitude, and the response can be characterized by a logarithmic susceptibility. This susceptibility is used to analyze optimal control of large fluctuations. For nonadiabatic driving, the activation energies for nucleation and for escape of a Brownian particle display singular behavior as a function of the field shape.
The article contains 4 pages and two figures

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Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/151752

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9704036
 http://arxiv.org/abs/cond-mat/9704036

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arXiv