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arXiv 2005.00827cond-mat.str-el
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有限温度下二维半填充哈伯德模型的准粒子泛函重整化群计算

Quasi-particle functional Renormalisation Group calculations in the two-dimensional half-filled Hubbard model at finite temperatures

D. Rohe, C. Honerkamp

摘要:

我们提出了一个高度并行化的计划,用于治疗功能重整化群方程,其中包括一个准粒子为基础的反馈流,并提供直接访问实频自能数据。这允许映射出费米液体制度的边界,并研究费米液体不稳定性附近的准粒子退化的影响。作为第一个应用程序,选定的结果为二维半满完全嵌套哈伯德模型。

英文摘要:

We present a highly parallelisable scheme for treating functional Renormalisation Group equations which incorporates a quasi-particle-based feedback on the flow and provides direct access to real-frequency self-energy data. This allows to map out the boundaries of Fermi-liquid regimes and to study the effect of quasi-particle degradation near Fermi liquid instabilities. As a first application, selected results for the two-dimensional half-filled perfectly nested Hubbard model are shown.

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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