Non-Hermitian Tridiagonal Random Matrices and Returns to the Origin of a Random Walk
Non-Hermitian Tridiagonal Random Matrices and Returns to the Origin of a Random Walk
复制标题
非厄米特三对角随机矩阵和回归随机游走的起源
DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
L. Molinari
中科院分区:
文献类型:
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作者:
G. M. Cicuta;M. Contedini;L. Molinari
We study a class of tridiagonal matrix models, the “q-roots of unity” models, which includes the sign (q=2) and the clock (q=∞) models by Feinberg and Zee. We find that the eigenvalue densities are bounded by and have the symmetries of the regular polygon with 2q sides, in the complex plane. Furthermore, the averaged traces of Mk are integers that count closed random walks on the line such that each site is visited a number of times multiple of q. We obtain an explicit evaluation for them.