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arXiv 0904.1322math-phmath.MP
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Hamilton系统的弛豫时间

Relaxation times for Hamiltonian systems

A. M. Maiocchi, A. Carati

摘要:

通常,气体的弛豫时间是在玻尔兹曼方程的框架中估计的。在本文中,相反,我们处理的哈密顿系统的动力学理论的框架内的松弛问题,其中的定义本身的松弛时间是一个悬而未决的问题。我们引入了弛豫时间的一个下界,并给出了估计它的一般定理,然后我们给出了一个应用于相互作用气体的具体模型,在这个模型中,这个下界与在稀气体中观察到的弛豫时间的数量级相同。

英文摘要:

Usually, the relaxation times of a gas are estimated in the frame of the Boltzmann equation. In this paper, instead, we deal with the relaxation problem in the frame of the dynamical theory of Hamiltonian systems, in which the definition itself of a relaxation time is an open question. We introduce a lower bound for the relaxation time, and give a general theorem for estimating it. Then we give an application to a concrete model of an interacting gas, in which the lower bound turns out to be of the order of magnitude of the relaxation times observed in dilute gases.

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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