论文标题
1D扩展哈伯德模型的频谱特性，来自琼脂化和时间依赖性变分原理：应用于1D铜的应用
Spectral properties of 1D extended Hubbard model from bosonization and time-dependent variational principle: applications to 1D cuprate
论文作者
论文摘要
最近在掺杂的1D铜岩上进行的ARPES实验揭示了有效的近邻居（NN）景点在解释光谱函数中某些特征方面的重要性。在这里，我们通过采用持续化分析和高精度时间依赖性的变异原理（TDVP）计算，以1D链上使用持续分析分析（TDVP）计算，以1D链的计算进行了现场排斥$ u $和NN相互作用$ V $的扩展哈伯德模型的光谱特性。从最先进的TDVP计算中，我们发现，折叠的光谱权重和$ 3K_F $分支的频谱随着$ V $的函数而反对演变。这种特殊的二分法可以在琼脂化分析中解释，从指数的相反依赖性决定了光谱权重$k_ρ$。此外，我们对具有固定$ U = 8T $和不同$ V $的型号的TDVP计算表明，$ V \ -1.7T $可能最适合实验结果，这表明一维丘比特的中等有效的NN吸引力可能会提供一些提示，这些提示可能会在2DDDDICRATES中了解超导性。
Recent ARPES experiments on doped 1D cuprates revealed the importance of effective near-neighbor (NN) attractions in explaining certain features in spectral functions. Here we investigate spectral properties of the extended Hubbard model with the on-site repulsion $U$ and NN interaction $V$, by employing bosonization analysis and the high-precision time-dependent variational principle (TDVP) calculations of the model on 1D chain with up to 300 sites. From state-of-the-art TDVP calculations, we find that the spectral weights of the holon-folding and $3k_F$ branches evolve oppositely as a function of $V$. This peculiar dichotomy may be explained in bosonization analysis from the opposite dependence of exponent that determines the spectral weights on Luttinger parameter $K_ρ$. Moreover, our TDVP calculations of models with fixed $U=8t$ and different $V$ show that $V\approx -1.7t$ may fit the experimental results best, indicating a moderate effective NN attraction in 1D cuprates that might provide some hints towards understanding superconductivity in 2D cuprates.
