论文标题
当地力矩形成的指纹及其在多电子问题的广义敏感性中进行的围绕筛查
Fingerprints of the local moment formation and its Kondo screening in the generalized susceptibilities of many-electron problems
论文作者
论文摘要
我们确定了局部磁矩形成的精确标志及其在广义电荷敏感性的频率结构中的围绕筛选。我们识别的清晰度甚至指出了一个替代标准，可以在两个粒子水平上确定强相关系统的围绕温度，这仅需要以最低的Matsubara频率计算。我们通过将其应用于单个杂质和周期性的安德森模型以及哈伯德模型来展示其强度。我们的结果代表了对量子场理论在两个粒子水平上的一般理解的重大进展，并允许追踪相关方案中通过扰动方法捕获的物理学的限制。
We identify the precise hallmarks of the local magnetic moment formation and its Kondo screening in the frequency structure of the generalized charge susceptibility. The sharpness of our identification even pinpoints an alternative criterion to determine the Kondo temperature of strongly correlated systems on the two-particle level, which only requires calculations at the lowest Matsubara frequency. We showcase its strength by applying it to the single impurity and the periodic Anderson model as well as to the Hubbard model. Our results represent a significant progress for the general understanding of quantum field theory at the two-particle level and allow for tracing the limits of the physics captured by perturbative approaches in correlated regimes.
