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arXiv 1202.1810cond-mat.stat-mechphysics.plasm-ph
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长程相互作用系统的遍历破缺与参数共振

Ergodicity Breaking and Parametric Resonances in Systems with Long-Range Interactions

Fernanda P. da C. Benetti, Tarcísio N. Teles, Renato Pakter, Yan Levin

摘要:

我们探讨的机制负责遍历打破系统与长程力。在热力学极限下,这样的系统不会演化到玻尔兹曼-吉布斯平衡,而是陷入一个非平衡的准定态。然而,我们表明,如果初始分布满足一个特定的约束-一个广义维里条件-准定常状态是非常接近遍历,可以描述的林登-贝尔统计。另一方面,如果广义维里条件被违反,参数共振被激发,导致混沌和遍历性破缺。

英文摘要:

We explore the mechanism responsible for the ergodicity breaking in systems with long-range forces. In thermodynamic limit such systems do not evolve to the Boltzmann-Gibbs equilibrium, but become trapped in an out-of-equilibrium quasi-stationary-state. Nevertheless, we show that if the initial distribution satisfies a specific constraint - a generalized virial condition - the quasi- stationary-state is very close to ergodic and can be described by Lynden-Bell statistics. On the other hand if the generalized virial condition is violated, parametric resonances are excited, leading to chaos and ergodicity breaking.

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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