Periodic Lorentz gas with small scatterers.

Periodic Lorentz gas with small scatterers.
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DOI:
10.1007/s00440-023-01197-6
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发表时间:
2023
影响因子:
2
通讯作者:
--
中科院分区:
数学1区
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我们证明了无限视界平面周期洛伦兹气体的极限定律,当时间n趋于无穷大时,散射体的大小也可能以足够慢的速度同时趋于零。特别地,我们得到了位移函数的一个非标准中心极限定理和一个局部极限定理。就我们所知,这些是关于两个研究得很好的具有超扩散比例的制度之间的中间情况的第一个结果:(I)固定无限水平配置--先让,然后--研究,例如Szász和Varjú(J Stat Phys 129(1):59-80,2007)和(Ii)Boltzmann-Grad类型的情况--先让,然后--由Marklof和Tóth研究(Commun Math Phys 347(3):933-981,2016)。
We prove limit laws for infinite horizon planar periodic Lorentz gases when, as time n tends to infinity, the scatterer size may also tend to zero simultaneously at a sufficiently slow pace. In particular we obtain a non-standard Central Limit Theorem as well as a Local Limit Theorem for the displacement function. To the best of our knowledge, these are the first results on an intermediate case between the two well-studied regimes with superdiffusive scaling (i) for fixed infinite horizon configurations—letting first and then —studied e.g. by Szász and Varjú (J Stat Phys 129(1):59–80, 2007) and (ii) Boltzmann–Grad type situations—letting first and then —studied by Marklof and Tóth (Commun Math Phys 347(3):933–981, 2016) .
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