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arXiv 0812.4108math.PRcond-mat.stat-mechmath-phmath.MPnlin.SI
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无限粒子Dyson模型的非平衡动力学

Non-Equilibrium Dynamics of Dyson's Model with an Infinite Number of Particles

Makoto Katori, Hideki Tanemura

摘要:

戴森模型是一个一维的布朗运动系统,在任意一对粒子之间存在长程排斥力,其强度与距离的倒数成正比,比例常数为$β/2$。我们给出了初始配置的充分条件,使戴森模型与$β=2$和无限数量的粒子是很好地定义在这个意义上,任何多时间相关函数是由一个连续的内核的行列式。满足我们条件的无穷维组态类足够大,可以用来研究非平衡动力学。例如,我们得到了从一个组态开始的弛豫过程,其中$\Z$的每个点被一个粒子占据,到稳态,这是具有正弦核的行列式点过程。

英文摘要:

Dyson's model is a one-dimensional system of Brownian motions with long-range repulsive forces acting between any pair of particles with strength proportional to the inverse of distances with proportionality constant $β/2$. We give sufficient conditions for initial configurations so that Dyson's model with $β=2$ and an infinite number of particles is well defined in the sense that any multitime correlation function is given by a determinant with a continuous kernel. The class of infinite-dimensional configurations satisfying our conditions is large enough to study non-equilibrium dynamics. For example, we obtain the relaxation process starting from a configuration, in which every point of $\Z$ is occupied by one particle, to the stationary state, which is the determinantal point process with the sine kernel.

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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