arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1107.0548quant-ph
收藏

关于林德布拉德方程对整数变量经典开放系统的统计描述

On the statistical description of classical open systems with integer variables by the Lindblad equation

E. D. Vol

摘要:

本文提出了一种相容统计方法来研究一类状态由正整数集合表示的经典开放系统(职业编号)。这样的系统经常在物理学、化学、生态学、经济学和其他科学。我们的统计方法基于开放系统的量子理论的思想,考虑了系统变量的离散性和它们的时间波动-这两个效应在通常的平均场动力学方法中被忽略。该方法允许计算感兴趣的系统在任何时刻的分布函数和(或)所有矩。作为描述性例子,我们考虑一些简单的模型来说明该方法的有效性:一个与非线性力学有关,在所有这些例子中,用大占有数的方法得到的结果都与纯占有数的结果一致。动力学的方法,但对于小的数字有趣的差异和新的影响出现。可能观察到的影响与离散性和波动等系统进行了讨论。

英文摘要:

We propose the consistent statistical approach to consider a wide class of classical open systems whose states are specified by a set of positive integers(occupation numbers).Such systems are often encountered in physics, chemistry, ecology, economics and other sciences.Our statistical method based on ideas of quantum theory of open systems takes into account both discreteness of the system variables and their time fluctuations - two effects which are ignored in usual mean field dynamical approach.The method let one to calculate the distribution function and (or)all moments of the system of interest at any instant.As descriptive examples illustrating the effectiveness of the method we consider some simple models:one relating to nonlinear mechanics,and others taken from population biology .In all this examples the results obtained by the method for large occupation numbers coincide with results of purely dynamical approach but for small numbers interesting differences and new effects arise.The possible observable effects connected with discreteness and fluctuations in such systems are discussed.

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。

↑