Mpemba effect in the relaxation of an active Brownian particle in a trap without metastable states.

IF 3.1 2区 化学 Q3 CHEMISTRY, PHYSICAL
Apurba Biswas, R Rajesh
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引用次数: 0

Abstract

We explore the role of activity in the occurrence of the Mpemba effect within a system of an active colloid diffusing in a potential landscape devoid of metastable minimum. The Mpemba effect is characterized by a phenomenon where a hotter system reaches equilibrium quicker than a colder one when both are rapidly cooled to the same low temperature. While a minimal asymmetry in the potential landscape is crucial for observing this effect in passive colloidal systems, the introduction of activity can either amplify or reduce the threshold of this minimal asymmetry, resulting in the activity-induced and suppressed Mpemba effect. We attribute these variations in the Mpemba effect to the effective translational shift in the phase boundaries, which occurs as activity is changed.

无亚稳态阱中活性布朗粒子弛豫的Mpemba效应。
我们探讨了活性的作用,在一个系统内的一个活跃的胶体扩散在一个潜在的景观中没有亚稳最小值的Mpemba效应的发生。Mpemba效应的特点是,当两者迅速冷却到相同的低温时,一个较热的系统比一个较冷的系统更快达到平衡。在被动胶体系统中,最小的不对称性对于观察这种效应至关重要,而活性的引入可以放大或降低这种最小不对称性的阈值,从而导致活性诱导和抑制Mpemba效应。我们将这些Mpemba效应的变化归因于相边界的有效平移,这是随着活动的改变而发生的。
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来源期刊
Journal of Chemical Physics
Journal of Chemical Physics 物理-物理:原子、分子和化学物理
CiteScore
7.40
自引率
15.90%
发文量
1615
审稿时长
2 months
期刊介绍: The Journal of Chemical Physics publishes quantitative and rigorous science of long-lasting value in methods and applications of chemical physics. The Journal also publishes brief Communications of significant new findings, Perspectives on the latest advances in the field, and Special Topic issues. The Journal focuses on innovative research in experimental and theoretical areas of chemical physics, including spectroscopy, dynamics, kinetics, statistical mechanics, and quantum mechanics. In addition, topical areas such as polymers, soft matter, materials, surfaces/interfaces, and systems of biological relevance are of increasing importance. Topical coverage includes: Theoretical Methods and Algorithms Advanced Experimental Techniques Atoms, Molecules, and Clusters Liquids, Glasses, and Crystals Surfaces, Interfaces, and Materials Polymers and Soft Matter Biological Molecules and Networks.
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