arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1105.1104cond-mat.str-el
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自旋为1/2的XXZ金刚石链的Jordan-Wigner费米化方法

Spin-1/2 XXZ diamond chain within the Jordan-Wigner fermionization approach

Taras Verkholyak, Jozef Strecka, Michal Jascur, Johannes Richter

摘要:

自旋为1/2的XXZ金刚石链被认为是在乔丹-维格纳费米子化。费米子化的哈密顿量包含了在Hartree-Fock近似下处理的相互作用项。我们得到了一些特殊情况下模型的基态磁化曲线,并与30自旋有限链的精确对角化数据和已知的精确结果进行了比较。我们还分析了建议的近似的有效性。

英文摘要:

The spin-1/2 XXZ diamond chain is considered within the Jordan-Wigner fermionization. The fermionized Hamiltonian contains the interacting terms which are treated within the Hartree-Fock approximation. We obtain the ground-state magnetization curve of the model for some particular cases and compare the results with the exact diagonalization data for finite chains of 30 spins and known exact results. We also analyze the validity of the suggested approximation.

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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