Event-based analysis of convergence to energy equipartition

IF 0.8 4区教育学 Q3 EDUCATION, SCIENTIFIC DISCIPLINES

American Journal of Physics Pub Date : 2024-03-01 DOI:10.1119/5.0142173

Arnaldo Spalvieri

引用次数: 0

Abstract

The paper presents a simple yet rigorous analysis of the transient of the spatial distribution of the kinetic energy of a classical ideal monoatomic dilute gas that passes from non-equilibrium to equilibrium. The proposed approach is event-based, in the sense that the evolution of the system is analyzed as a function of the random number of collisions in a given time interval. Taking a very simple yet realistic model of collision, the paper shows that collisions between atoms lead exponentially to energy equipartition.

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基于事件的能量等分收敛分析

本文对经典理想单原子稀薄气体从非平衡态到平衡态的动能空间分布瞬态进行了简单而严谨的分析。所提出的方法是基于事件的，即系统的演化是作为给定时间间隔内碰撞的随机数量的函数来分析的。论文采用了一个非常简单但现实的碰撞模型，表明原子间的碰撞会以指数方式导致能量均衡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

American Journal of Physics 物理-物理：综合

CiteScore

1.80

自引率

11.10%

发文量

146

审稿时长

3 months

期刊介绍： The mission of the American Journal of Physics (AJP) is to publish articles on the educational and cultural aspects of physics that are useful, interesting, and accessible to a diverse audience of physics students, educators, and researchers. Our audience generally reads outside their specialties to broaden their understanding of physics and to expand and enhance their pedagogical toolkits at the undergraduate and graduate levels.