Eigenvalue Order Statistics for Random Schrödinger Operators with Doubly-Exponential Tails
Eigenvalue Order Statistics for Random Schrödinger Operators with Doubly-Exponential Tails
复制标题
具有双指数尾的随机薛定谔算子的特征值阶统计
DOI:
10.1007/s00220-015-2430-9
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发表时间:
2016
影响因子:
2.4
通讯作者:
W. König
中科院分区:
文献类型:
--
作者:
M. Biskup;W. König
We consider random Schrödinger operators of the form, whereis the lattice Laplacian onandis an i.i.d. random field, and study the extreme order statistics of the Dirichlet eigenvalues for this operator restricted to large but finite subsets of. We show that, forwith a doubly-exponential type of upper tail, the upper extreme order statistics of the eigenvalues falls into the Gumbel max-order class, and the corresponding eigenfunctions are exponentially localized in regions wheretakes large, and properly arranged, values. The picture we prove is thus closely connected with the phenomenon of Anderson localization at the spectral edge. Notwithstanding, our approach is largely independent of existing methods for proofs of Anderson localization and it is based on studying individual eigenvalue/eigenfunction pairs and characterizing the regions where the leading eigenfunctions put most of their mass.
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