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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Current inversion in an asymmetric periodic potential driven by cross-correlated white noise sources
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Current inversion in an asymmetric periodic potential driven by cross-correlated white noise sources

机译：互相关白噪声源驱动的非对称周期性电势中的电流反转

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摘要

With both theoretical approximation and numerical simulations, we study steady current of a Brownian particle moving in an asymmetric periodic potential driven by cross-correlation between multiplicative and additive noises. The effects of the asymmetric parameter of the potential, the multiplicative noise intensity, the additive noise intensity and the correlated strength between multiplicative and additive noises are discussed. We find current reversal with respect to a variation of the asymmetric parameter or the correlated strength. It is also shown that the direction of the steady current is controlled by multiplicative or additive noise intensity, but they are not sufficient conditions for current reversal.
机译：通过理论逼近和数值模拟，我们研究了布朗粒子的稳定电流，该布朗粒子在乘性噪声与加性噪声之间的互相关驱动下在不对称的周期性电势中运动。讨论了电势的非对称参数，乘性噪声强度，加性噪声强度以及乘性噪声与加性噪声之间的相关强度的影响。我们发现，相对于不对称参数或相关强度的变化，当前发生了逆转。还表明，稳定电流的方向由乘性或相加噪声强度控制，但它们不是电流反向的充分条件。

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