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arXiv 2101.05481math.PRcond-mat.stat-mech
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Kac型游动的大偏差

Large deviations for Kac-like walks

Giada Basile, Dario Benedetto, Lorenzo Bertini, Carlo Orrieri

摘要:

我们引入了卡茨型行走,其二元碰撞速率保留了总动量,但不保留动能。在大粒子数的限制下,我们用经验测度和流描述了动力学,证明了相应的大偏差原理。相关的速率函数具有显式表达式。作为这种分析的副产品,我们提供了一个梯度流的Boltzmann-Kac方程的制定。

英文摘要:

We introduce a Kac's type walk whose rate of binary collisions preserves the total momentum but not the kinetic energy. In the limit of large number of particles we describe the dynamics in terms of empirical measure and flow, proving the corresponding large deviation principle. The associated rate function has an explicit expression. As a byproduct of this analysis, we provide a gradient flow formulation of the Boltzmann-Kac equation.

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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