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arXiv 2303.01757cond-mat.soft
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惯性抑制谐振势中活动布朗粒子的活动特征

Inertia suppresses signatures of activity of active Brownian particles in a harmonic potential

Angelica Arredondo, Catania Calavitta, Mauricio Gomez, Jose Mendez-Villanueva, Wylie W. Ahmed, Nicholas D. Brubaker

摘要:

一个谐波捕获的活性布朗粒子表现出两种类型的位置分布-一个有一个单峰,另一个有一个单一的井-这意味着稳态动力学低和高活性,分别。向平移运动添加惯性保留了密度的这种严格的单峰/井分类,但改变了参数空间中状态之间的划分边界。我们在一个空间维度的动态使用静态福克-普朗克方程的状态空间的完整的联合分布的特点是这种转变。我们用摄动方法解析地导出了小转速下的局部结果,然后用数值方法将其推广到全局

英文摘要:

A harmonically trapped active Brownian particle exhibits two types of positional distributions -- one has a single peak, the other has a single well -- that signify steady-state dynamics with low and high activity, respectively. Adding inertia to the translational motion preserves this strict single peak/well classification of the densities but shifts the dividing boundary between the states in the parameter space. We characterize this shift for the dynamics in one spatial dimension using the static Fokker--Planck equation for the full joint distribution of the state space. We derive local results analytically with a perturbation method for a small rotational velocity and then extend them globally with a numerical approach

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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