Active Brownian particles in two-dimensional traps

Active Brownian particles in two-dimensional traps
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二维陷阱中的活性布朗粒子

DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
H. Stark
H. Stark
中科院分区:
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文献类型:
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作者:
A. Pototsky;H. Stark

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我们考虑二维陷阱中一群自驱动的布朗粒子。对于无相互作用的粒子,在小的和大的转动扩散率情况下,通过解析方法得到了位置和取向的稳态分布。这些结果被用于将相互作用的活性粒子系统映射到一个具有修正陷阱势的被动粒子系统上,然后我们将其表述为动态密度泛函理论。我们的方法得到了原始模型和有效模型的布朗动力学模拟的支持。
We consider a population of self-propelled Brownian particles in 2D traps. For non-interacting particles the stationary distribution for position and orientation is found analytically for small and large rotational diffusivities. These results are used to map the system of interacting active particles onto a system of passive particles in a modified trapping potential which we then formulate as a dynamic density functional theory. Our approach is supported by Brownian dynamics simulations of the original and the effective model.