Limit theorems for Bessel and Dunkl processes of large dimensions and free convolutions
Limit theorems for Bessel and Dunkl processes of large dimensions and free convolutions
复制标题
大维和自由卷积的 Bessel 和 Dunkl 过程的极限定理
DOI:
10.1016/j.spa.2021.10.005
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发表时间:
2020
影响因子:
1.4
通讯作者:
Jeannette H. C. Woerner
中科院分区:
文献类型:
--
作者:
M. Voit;Jeannette H. C. Woerner
Abstract We study Bessel and Dunkl processes (X t, k) t≥ 0 on R N with possibly multivariate coupling constants k≥ 0. These processes describe interacting particle systems of Calogero–Moser–Sutherland type with N particles. For the root systems A N− 1 and B N these Bessel processes are related with β-Hermite and β-Laguerre ensembles. Moreover, for the frozen case k=∞, these processes degenerate to deterministic or pure jump processes. We use the generators for Bessel and Dunkl processes of types A and B and derive analogues of Wigner’s semicircle and Marchenko–Pastur limit laws for N→∞ for the empirical distributions of the particles with arbitrary initial empirical distributions by using free convolutions. In particular, for Dunkl processes of type B new non-symmetric semicircle-type limit distributions on R appear. Our results imply that the form of the limiting measures is already completely determined by the frozen processes. Moreover, in the frozen cases, our approach leads to a new simple proof of the semicircle and Marchenko–Pastur limit laws for the empirical measures of the zeros of Hermite and Laguerre polynomials respectively.
影响因子:
2.6
作者:
V. Gorin;V. Kleptsyn
通讯作者:
V. Gorin;V. Kleptsyn