Bhattacharya, Satyabrata ; Chaudhury, Pinaki ; Chattopadhyay, Sudip ; Chaudhuri, Jyotipratim Ray (2008) Directed motion in a periodic potential of a quantum system coupled to a heat bath driven by a colored noise Physical Review E, 78 (2). ISSN 1539-3755
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Official URL: http://doi.org/10.1103/PhysRevE.78.021123
Related URL: http://dx.doi.org/10.1103/PhysRevE.78.021123
Abstract
A system-reservoir nonlinear coupling model is proposed for a quantum system when the associated bath is not in thermal equilibrium but is modulated by an external colored noise, to present a microscopic approach to quantum state-dependent diffusion and multiplicative noise in terms of a quantum Langevin description. Consequently, the Fokker-Planck equation in position space, valid in the overdamped limit, for multiplicative colored noise is constructed to explore the possibility of observing a quantum current and dependence of the current on various parameters of external noise is examined.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society |
| ID Code: | 134336 |
| Deposited On: | 06 Jan 2023 05:08 |
| Last Modified: | 06 Jan 2023 05:08 |
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