arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.14364cond-mat.stat-mech
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(Non可积模型的热力学:经典Neumann模型的广义Gibbs熵描述

(Non equilibrium) Thermodynamics of Integrable models: The Generalized Gibbs Ensemble description of the classical Neumann Model

Damien Barbier, Leticia F. Cugliandolo, Gustavo S. Lozano, Nicolas Nessi

摘要:

我们研究一个经典的可积(诺依曼)模型描述的运动的一个粒子上的球,受谐波力。我们解决的问题,在无限维的限制,通过引入一个软版本,其中的球形约束仅施加平均初始条件。我们表明,广义吉布斯熵捕获的软模型的长时间平均值。我们揭示了完整的动态相图扩展,准凝聚,坐标,坐标和动量凝聚相。的波动的标度特性,使我们能够建立在严格和软球约束的情况下是等效的,确认的GGE假设的诺依曼模型的动态相图的大部分的有效性。

英文摘要:

We study a classical integrable (Neumann) model describing the motion of a particle on the sphere, subject to harmonic forces. We tackle the problem in the infinite dimensional limit by introducing a soft version in which the spherical constraint is imposed only on average over initial conditions. We show that the Generalized Gibbs Ensemble captures the long-time averages of the soft model. We reveal the full dynamic phase diagram with extended, quasi-condensed, coordinate-, and coordinate and momentum-condensed phases. The scaling properties of the fluctuations allow us to establish in which cases the strict and soft spherical constraints are equivalent, confirming the validity of the GGE hypothesis for the Neumann model on a large portion of the dynamic phase diagram.

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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