Dataset for "Non-Perturbative Feats in the Physics of Correlated Antiferromagnets"

The data repository contains the original figures, numerical (raw) data, and plot scripts to reproduce the figures from the publication "Non-Perturbative Feats in the Physics of Correlated Antiferromagnets" at Physical Review Research. The preprint and LaTeX source files are available on arXiv.

The dataset contains paramagnetic and antiferromagnetic (AF) results from dynamical mean-field theory calculations of the two-dimensional  Hubbard model at the one- and the two-particle level. The study investigates divergences of the two-particle irreducible vertex function in the coupled charge and spin sectors within the AF phase. The data map the location of these divergences across the AF phase diagram, showing how AF order reduces but does not eliminate the breakdown of the self-consistent perturbation expansion. Additionally, the results capture the changes in the dynamical structure of the corresponding generalized susceptibilities linking them to the crossover from a weak-coupling (Slater) to a strong-coupling (Heisenberg) antiferromagnet and explore potential links to phase-separation instabilities.

Additional information can be found in the README file. A detailed list of the used Python packages is provided in the file 'python_versions.txt'.

License

The CC-BY license applies to all the data, PNG and PDF files. All distributed code is under the MIT license.

本数据集仓库收录了发表于《物理评论研究》（Physical Review Research）的论文《关联反铁磁体物理中的非微扰特性》（"Non-Perturbative Feats in the Physics of Correlated Antiferromagnets"）的原始图表、原始数值数据，以及用于复现该论文所有图表的绘图脚本。该研究的预印本与LaTeX源文件可于arXiv平台获取。

本数据集包含二维哈伯德模型（Hubbard model）在单粒子与双粒子层面的动态平均场理论（dynamical mean-field theory）计算结果，涵盖顺磁相与反铁磁（AF）相两类数据。本研究针对反铁磁相内耦合电荷与自旋扇区中的双粒子不可约顶点函数（two-particle irreducible vertex function）的发散特性展开系统探究。数据集绘制了反铁磁相图中这些发散点的分布规律，揭示了反铁磁序如何抑制但并未完全消除自洽微扰展开（self-consistent perturbation expansion）的失效问题。此外，本结果捕捉了对应广义磁化率（generalized susceptibilities）的动力学结构变化，将其与从弱耦合（斯莱特，Slater）反铁磁体到强耦合（海森堡，Heisenberg）反铁磁体的交叉转变行为相关联，并探讨了其与相分离不稳定性（phase-separation instabilities）的潜在关联。

更多详细信息可查阅README文件。本研究使用的Python软件包完整清单已收录于`python_versions.txt`文件中。

许可证

所有数据、PNG与PDF文件均适用知识共享署名（CC-BY）许可协议。所有分发的代码均遵循MIT许可证协议。