发表机构
IITISM（印度科学技术学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用奴隶转子平均场理论分析修正周期安德森模型中的莫特转变，引入双位点团簇扩展揭示短程关联对转变点的影响，并通过辅助链映射探索其拓扑特性。
AI 中文摘要
莫特-哈伯德转变是由强电子关联驱动的典型现象。我们使用奴隶转子平均场理论研究了三轨道修正周期安德森模型中的这一转变。引入了一个最小双位点团簇扩展，以理解短程空间关联的最小效应。与单位点解相比，短程空间关联揭示了转变点的移动。超越奴隶转子分析，我们还评估了动力学自能，并将其映射到非相互作用半无限辅助链的边界格林函数上。对于金属相，所得的跳跃模式对应于拓扑平凡的广义Su-Schrieffer-Heeger链。该构造为探索该模型中莫特转变可能的拓扑特性提供了一个框架。
英文摘要
The Mott-Hubbard transition is a paradigmatic phenomenon driven by strong electronic correlations. We investigate this transition in a three-orbital modified periodic Anderson model using slave-rotor mean-field theory. A minimal two-site cluster extension is introduced to understand the minimal effects of short-range spatial correlations. In comparison to the single-site solution, short-range spatial correlations reveal a shift of the transition point. Going beyond the slave-rotor analysis, we also evaluate the dynamical self-energy and map it onto the boundary Green's function of a non-interacting semi-infinite auxiliary chain. For the metallic phase, the resulting hopping pattern corresponds to a topologically trivial generalized Su--Schrieffer--Heeger chain. This construction provides a framework for exploring the possible topological character of the Mott transition in this model.
Comments6 pages, 4 figures
