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arXiv 1301.7549cond-mat.str-el
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分数阶量子Hall系统激发态的矩阵积分析

Matrix-Product Ansatz for Excited States of Fractional Quantum Hall Systems

Zheng-Yuan Wang, Masaaki Nakamura

摘要:

最近,有人讨论了当对窄条假设环形边界条件时,$ν=1/3$分数量子霍尔态可以用具有精确矩阵乘积基态的一维晶格模型来表示[Phys.Rev.Lett. { \bf 109}(2012)016401]。在这篇文章中,我们讨论如何激发光谱的系统的基础上的矩阵乘积形式主义解析计算。我们引入了各种动量的变分波函数,并对其进行了优化。电荷中性激发的光谱显示了磁旋子行为。

英文摘要:

Recently, it was discussed that the $ν=1/3$ fractional quantum Hall state can be expressed by a one-dimensional lattice model with an exact matrix-prduct ground state, when toroidal boundary conditions are assumed for a narrow strip [Phys. Rev. Lett. {\bf 109} (2012) 016401]. In this article, we discuss how the excitation spectra of this system are calculated analytically based on the matrix-product formalism. We introduce variational wave functions for various momenta and optimize them. The obtained spectra of the charge neutral excitations show the magneto-roton behavior.

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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