论文标题
Luttinger液体参数来自张量网络数据
Luttinger liquid parameters from tensor network data
论文作者
论文摘要
我们使用HOTRG张量重归其化方法研究了交错磁场中的XXZ海森贝格模型。 XXZ模型的张量表示中内置的是U（1）对称性，该对称性在每个重新归一化步骤中系统地保持。我们从低谎言频谱中确定了模型的相图，并根据频谱的有限尺寸依赖性提取缩放尺寸，这与低能场理论的预测进行了比较。
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.
