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Nonequilibrium fluctuation induced escape from a metastable state

Autor: Chaudhuri, J. Ray, Barik, D., Banik, S. K.

Publikováno v: Eur. Phys. J. B 55 (2007) 333

Based on a simple microscopic model where the bath is in a non-equilibrium state we study the escape from a metastable state in the over-damped limit. Making use of Fokker-Planck-Smoluchowski description we derive the time dependent escape rate in th

Externí odkaz: http://arxiv.org/abs/cond-mat/0702217

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A semiclassical theory of quantum noise in open chaotic systems

Autor: Bag, B. C., Chaudhuri, S., Chaudhuri, J. Ray, Ray, D. S.

Publikováno v: Physica D, 125 (1999) 47

We consider the quantum evolution of classically chaotic systems in contact with surroundings. Based on $\hbar$-scaling of an equation for time evolution of the Wigner's quasi-probability distribution function in presence of dissipation and thermal d

Externí odkaz: http://arxiv.org/abs/chao-dyn/9811016

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Theory of Adiabatic fluctuations : third-order noise

Autor: Banik, S. K., Chaudhuri, J. R., Ray, D. S.

We consider the response of a dynamical system driven by external adiabatic fluctuations. Based on the `adiabatic following approximation' we have made a systematic separation of time-scales to carry out an expansion in $\alpha |\mu|^{-1}$, where $\a

Externí odkaz: http://arxiv.org/abs/cond-mat/9807203

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