具有非对称无偏涨落的非均匀系统中的电流反转
Current Reversals in a inhomogeneous system with asymmetric unbiased fluctuations
摘要：
研究了在周期对称势场中运动的布朗粒子在非对称无偏涨落作用下的输运问题。粒子被认为是在一个周期性的空间依赖摩擦介质中运动。通过调节系统的参数，电流的方向呈现反转，既作为温度的函数，也作为摇摆力的幅度。我们发现，相反的驱动因素之间的相互作用是电流反转的必要条件。
英文摘要：
We present a study of transport of a Brownian particle moving in periodic symmetric potential in the presence of asymmetric unbiased fluctuations. The particle is considered to move in a medium with periodic space dependent friction. By tuning the parameters of the system, the direction of current exhibit reversals, both as a function of temperature as well as the amplitude of rocking force. We found that the mutual interplay between the opposite driving factors is the necessary term for current reversals.
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