arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0906.0760math-phmath.MP
收藏

大n阶Toeplitz矩阵特征函数和特征值的展开式

Expansions for Eigenfunction and Eigenvalues of large-n Toeplitz Matrices

Leo P. Kadanoff

摘要:

本文从戴、吉尔里和卡丹诺夫的工作开始(戴辉、扎卡里·吉尔里和利奥·卡丹诺夫,H。戴,加-地Geary和L. P. Kadanoff,Journal of统计力学,P05012(2009))关于Toeplitz算子的精确本征函数。它建立的方法,寻找收敛展开的特征向量和特征值的大n Toeplitz矩阵,使用无限n的情况下作为起点。一个扩展是从具有二维连续谱的特征值的算子方程导出的,该特征值包括有限- $n$矩阵的特征值。另一种展开式是从转置方程导出的,它根本没有本征值。这两个展开式一起工作,给出一个明显收敛的展开式,其展开参数表示为n的逆幂。提出了一种变分原理,给出了确定特征值的近似表达式。一个一致性条件的产生,这给最低阶完全相同的条件的特征值。

英文摘要:

This note starts from work done by Dai, Geary, and Kadanoff (Hui Dai, Zachary Geary, and Leo P. Kadanoff, H. Dai, Z. Geary and L. P. Kadanoff, Journal of Statistical Mechanics, P05012 (2009)) on exact eigenfunctions for Toeplitz operators. It builds methods for finding convergent expansions for eigenvectors and eigenvalues of large-n Toeplitz matrices, using the infinite-n case as a starting point. One expansion is derived from operator equations having a two-dimensional continuous spectrum of eigenvalues, which include the eigenvalues of the finite-$n$ matrices. Another expansion is derived from the transpose equations, which have no eigenvalues at all. The two expansions work together to give an apparently convergent expansion with an expansion parameter expressed as an inverse power of n. A variational principle is developed which gives an approximate expression for determining eigenvalues. A consistency condition is generated, which gives to lowest order exactly the same condition for the eigenvalue.

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。

↑