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arXiv 0909.2928quant-ph
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矩阵乘积态与量子相变

Matrix Product States and Quantum Phase Transitions

K. Heshami, S. Raeisi

摘要:

我们发展了一种基于基态矩阵乘积表示的新方法来研究量子相变。作为确认我们的方法的力量,我们已经分析了XXZ自旋一链单轴单离子型各向异性和我们的结果相比,与以前的数值研究有利。此外,我们的描述让我们知道哈密顿量的参数空间的哪一部分最有可能是精确可解的。

英文摘要:

We have developed a new approach based on matrix product representations of ground states to study Quantum Phase Transitions (QPT). As confirmation of the power of our approach we have analytically analyzed the XXZ spin-one chain with uniaxial single-ion-type anisotropy and our results compare favourably with previous numerical studies. In addition, our description lets to know which part of parameters space of the Hamiltonian is most likely to be exactly solvable.

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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