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arXiv 0901.2843math-phmath.MP
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量子力学格算符本征函数的本质谱和指数估计

Essential spectra and exponential estimates of eigenfunctions of lattice operators of quantum mechanics

Vladimir Rabinovich, Steffen Roch

摘要:

本文研究格点Z^n上差分算子的本征函数的指数衰减估计,差分算子是薛定谔算子、狄拉克算子和平方根Klein-Gordon算子的离散类似物。我们对离散谱的本质谱和本征函数的指数衰减的研究是基于所谓的伪差分算子的微积分(即,群Z^n)上的伪微分算子的解析符号和极限算子方法。我们得到了量子力学中主要格点算符,即Z^n上的矩阵薛定谔算符、Z ^3上的狄拉克算符和Z^n上的平方根克莱因-戈登算符的本质谱位置的描述和离散谱的本征函数的估计。

英文摘要:

This paper is devoted to estimates of the exponential decay of eigenfunctions of difference operators on the lattice Z^n which are discrete analogs of the Schrödinger, Dirac and square-root Klein-Gordon operators. Our investigation of the essential spectra and the exponential decay of eigenfunctions of the discrete spectra is based on the calculus of so-called pseudodifference operators (i.e., pseudodifferential operators on the group Z^n) with analytic symbols and on the limit operators method. We obtain a description of the location of the essential spectra and estimates of the eigenfunctions of the discrete spectra of the main lattice operators of quantum mechanics, namely: matrix Schrödinger operators on Z^n, Dirac operators on Z^3, and square root Klein-Gordon operators on Z^n.

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。

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