A microscopic model for noise induced transport: Heat-bath nonlinearly driven by external white noise |
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Authors: | Ghosh Pradipta Shit Anindita Chattopadhyay Sudip Chaudhuri Jyotipratim Ray |
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Affiliation: | Department of Chemistry, Bengal Engineering and Science University, Shibpur, Howrah 711103, India. |
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Abstract: | This work explores the observation that, even in the absence of a net externally applied bias, a symmetric homogeneous system coupled linearly to two heat baths is capable of producing unidirectional motion simply by nonlinearly driving one of the heat baths by an external Gaussian white noise. This is quite contrary to the traditional observation that, in order to obtain a net drift current, a state-dependent dissipation, which is a consequence of nonlinear system-bath coupling, is ubiquitous. |
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