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arXiv 2210.09600math.AP
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动量估计与二三元波尔兹曼方程的适定性

Moment estimates and well-posedness of the binary-ternary Boltzmann equation

Courant Institute of Mathematical Sciences, New York University(纽约大学柯朗数学科学研究所);Department of Mathematics, The University of Texas at Austin(德克萨斯大学奥斯汀分校数学系);Department of Mathematics, Emory University(埃默里大学数学系)

Ioakeim Ampatzoglou, Irene M. Gamba, Nataša Pavlović, Maja Tasković

AI总结:

本文研究了二三元波尔兹曼方程的多项式和指数动量生成与传播,以及其全局适定性,发现二三元碰撞比仅二元或三元碰撞具有更好的生成性质和时间衰减特性。

摘要:

在本文中,我们展示了二三元波尔兹曼方程的多项式和指数动量的生成与传播,以及其全局适定性。我们还表明,二元和三元碰撞的共存比仅考虑二元或三元碰撞时具有更好的生成性质和时间衰减特性。为解决这些问题,我们首次开发了用于三元相互作用的角平均估计。这是首次针对二三元波尔兹曼方程讨论此类问题的论文,为研究高碰撞密度气体的动量性质打开了新的研究方向。

英文摘要:

In this paper, we show generation and propagation of polynomial and exponential moments, as well as global well-posedness of the homogeneous binary-ternary Boltzmann equation. We also show that the co-existence of binary and ternary collisions yields better generation properties and time decay, than when only binary or ternary collisions are considered. To address these questions, we develop for the first time angular averaging estimates for ternary interactions. This is the first paper which discusses this type of questions for the binary-ternary Boltzmann equation and opens the door for studying moments properties of gases with higher collisional density.

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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