arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1210.0902math.DSmath-phmath.MPmath.PR
收藏

具有随机散射体的Sinai台球的向量值几乎必然不变原理

A vector-valued almost sure invariance principle for Sinai billiards with random scatterers

Mikko Stenlund

摘要:

了解非周期性平面洛伦兹气体的统计特性是动力系统理论中的一个重大挑战。在这里,我们研究了一个大大简化,但相关的模型,提出了Arvind Ayyer和推广的乔尔Lebowitz,在该模型中,一个散射体配置的环面之间的碰撞随机更新。利用时间相关台球理论和概率论的最新进展,我们证明了该模型的向量值几乎必然不变原理。值得注意的是,配置序列可以是弱相关的和非平稳的。我们提供了一个表达式的协方差阵,这在非平稳的情况下不同于传统的。我们还得到了一个新的不变原理西奈台球(固定散射体的情况下)与时间相关的可观测量,并提高现有结果的准确性和通用性。

英文摘要:

Understanding the statistical properties of the aperiodic planar Lorentz gas stands as a grand challenge in the theory of dynamical systems. Here we study a greatly simplified but related model, proposed by Arvind Ayyer and popularized by Joel Lebowitz, in which a scatterer configuration on the torus is randomly updated between collisions. Taking advantage of recent progress in the theory of time-dependent billiards on the one hand and in probability theory on the other, we prove a vector-valued almost sure invariance principle for the model. Notably, the configuration sequence can be weakly dependent and non-stationary. We provide an expression for the covariance matrix, which in the non-stationary case differs from the traditional one. We also obtain a new invariance principle for Sinai billiards (the case of fixed scatterers) with time-dependent observables, and improve the accuracy and generality of existing results.

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。

↑