Non-equilibrium fluctuations in the ring of material points with gravity

被引：1

作者：

Melkikh, E. A. ^{[1
]}

Melkikh, A. V. ^{[1
]}

Tokmantsev, V. I. ^{[1
]}

机构：

[1] Ural Fed Univ, Mira Str 19, Ekaterinburg, Russia

来源：

MODERN PHYSICS LETTERS B | 2017年 / 31卷 / 01期

关键词：

System with gravity; non-equilibrium fluctuations; long-range interactions; distribution function; entropy; THERMODYNAMICS; MECHANICS; SYSTEMS;

D O I：

10.1142/S021798491650425X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

As a result of numerical modeling the dependence of relative mean-square fluctuation of evaporating particles for the ring of material points interacting via gravitational forces is obtained. It is shown that this dependence is 1/N-alpha, where a = 0.390.6 for different virial ratios. The dependence of a fraction of evaporated particles on the width of the ring and on the ratio between the average kinetic and potential energy of the particles is obtained. The dependence of mean square deviation of fraction of evaporated particles on time was investigated. It was concluded that the concept entropy (as well as other thermodynamical parameters) could not be correctly introduced in the systems with gravity.

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页数：8

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