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arXiv math-ph/0310059math-phmath.MP
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铁磁XXZ Heisenberg链中液滴态的展开

Expansions for Droplet States in the Ferromagnetic XXZ Heisenberg Chain

Tom Kennedy

摘要:

本文研究了具有周期边界条件的高各向异性铁磁自旋1/2海森堡链。在每个部门的恒定的总z分量的自旋,我们开发的收敛展开的最低频带的本征值和本征函数。这些本征态描述了其中自旋基本上形成可以移动的单个线性液滴的液滴状态。我们的结果还给出了色散关系的收敛展开,即,液滴的能量是其动量的函数。所使用的方法来自math-ph/0208026和cond-mat/0104199,这篇短文应该作为这些论文的教学介绍。

英文摘要:

We consider the highly anisotropic ferromagnetic spin 1/2 Heisenberg chain with periodic boundary conditions. In each sector of constant total z component of the spin, we develop convergent expansions for the lowest band of eigenvalues and eigenfunctions. These eigenstates describe droplet states in which the spins essentially form a single linear droplet which can move. Our results also give a convergent expansion for the dispersion relation, i.e., the energy of the droplet as a function of its momentum. The methods used are from math-ph/0208026 and cond-mat/0104199, and this short paper should serve as a pedagogic introduction to those papers.

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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