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arXiv 1507.01099math.AP
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Boltzmann型框架中的拓扑相互作用

Topological interactions in a Boltzmann-type framework

Adrien Blanchet, Pierre Degond

摘要:

我们考虑有限数量的粒子,其特征在于它们的位置和速度。在随机时间,一个随机选择的粒子,跟随者,采用另一个粒子,领导者的速度。跟随者根据后者相对于前者的接近等级来选择其领导者。我们研究了系统尺寸趋于无穷大的极限,并在混沌传播的假设下,证明了极限方程类似于玻尔兹曼方程。然而,它表现出空间非局域性,而不是经典的速度空间非局域性。这个结果依赖于伯恩斯坦多项式的逼近性质。

英文摘要:

We consider a finite number of particles characterised by their positions and velocities. At random times a randomly chosen particle, the follower, adopts the velocity of another particle, the leader. The follower chooses its leader according to the proximity rank of the latter with respect to the former. We study the limit of a system size going to infinity and, under the assumption of propagation of chaos, show that the limit equation is akin to the Boltzmann equation. However, it exhibits a spatial non-locality instead of the classical non-locality in velocity space. This result relies on the approximation properties of Bernstein polynomials.

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