Active matter in lateral parabolic confinement: From subdiffusion to superdiffusion
Active matter in lateral parabolic confinement: From subdiffusion to superdiffusion
复制标题
横向抛物线约束中的活性物质：从亚扩散到超扩散
DOI：
10.1016/j.physa.2016.06.139
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
F. Potiguar
中科院分区：
文献类型：
--
作者：
H. E. Ribeiro;F. Potiguar
本文研究了在侧向抛物约束下主动布朗粒子的扩散行为。结果表明，当我们改变角噪声强度和约束强度时，我们从亚扩散到弹道运动。我们认为，亚扩散制度出现的后果有限的空间可供扩散（通过大限制和/或大噪声实现）;我们看到，当存在大限制和噪声强度时，出现与单列扩散类似的配置;另一方面，由于低噪声，可能出现正常和超扩散区（更长的持续运动），或者通过在横向方向上探索电势最小值周围的更宽区域（低限制），或者通过形成独立的团簇（高限制）。
In this work we studied the diffusive behavior of active brownian particles under lateral parabolic confinement. The results showed that we go from subdiffusion to ballistic motion as we vary the angular noise strength and confinement intensity. We argued that the subdiffusion regimes appear as consequence of the restricted space available for diffusion (achieved either through large confinement and/or large noise); we saw that when there are large confinement and noise intensity, a similar configuration to single file diffusion appears; on the other hand, normal and superdiffusive regimes may occur due to low noise (longer persistent motion), either through exploring a wider region around the potential minimum in the transverse direction (low confinement), or by forming independent clusters (high confinement).