论文标题
在有限温度下的二维半填充哈伯德模型中的准粒子功能重量级化组计算
Quasi-particle functional Renormalisation Group calculations in the two-dimensional half-filled Hubbard model at finite temperatures
论文作者
论文摘要
我们提出了一个高度可行的方案，用于处理功能性重量化组方程，该方程结合了基于准粒子的流动反馈，并直接访问了对实时的自我能源数据。这允许绘制费米 - 液体状态的边界，并研究费米液体不稳定性附近的准粒子降解的影响。作为第一个应用程序，显示了二维半填充完美嵌套哈伯德模型的选定结果。
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.
