论文标题
过度阻尼布朗动力学的孤子
Solitons in overdamped Brownian dynamics
论文作者
论文摘要
孤子通常被称为波浪，而无需分散。在这里，我们表明，在高密度下，在周期性电势中，驱动的硬球驱动过度阻尼的强型布朗动态可能会发生。孤子表现为在零噪声极限的不同组件的周期序列中表现出来，在零噪声的极限中，单个颗粒的传输是不可能的。它们在某些硬球直径周围的带状结构中引起粒子电流。在高温下，带状结构被噪声冲洗掉，但是粒子的传输仍然由孤子统治。所有这些预测的特征应发生在广泛的周期系统中，并且可以接受实验测试。
Solitons are commonly known as waves that propagate without dispersion. Here we show that they can occur for driven overdamped Brownian dynamics of hard spheres in periodic potentials at high densities. The solitons manifest themselves as periodic sequences of different assemblies of particles moving in the limit of zero noise, where transport of single particles is not possible. They give rise to particle currents at even low temperature that appear in band-like structures around certain hard-sphere diameters. At high temperatures, the band-like structures are washed out by the noise, but the particle transport is still dominated by the solitons. All these predicted features should occur in a broad class of periodic systems and are amenable to experimental tests.
