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arXiv 2006.07306cond-mat.str-el
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张量网络数据的Luttinger液体参数

Luttinger liquid parameters from tensor network data

Michael Weyrauch, Mykhailo V. Rakov

摘要:

利用HOTRG张量重整化方法研究了交错磁场中XXZ海森堡模型。XXZ模型的张量表示中包含U(1)对称性,它在每个重整化步骤中都得到系统性的保持。我们确定的相图的模型从低洼的频谱,并从有限的尺寸依赖的频谱,我们提取标度尺寸,这是比较低能量场论的预测。

英文摘要:

We study the XXZ Heisenberg model in a staggered magnetic field using the HOTRG tensor renormalization method. Built into the tensor representation of the XXZ model is the U(1) symmetry, which is systematically maintained at each renormalization step. We determine the phase diagram of the model from the low lying spectrum, and from the finite size dependence of the spectrum we extract scaling dimensions, which are compared to predictions of low energy field theory.

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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