We present a phenomenological Green's function to characterize the superconducting and pseudogap phases of the cuprates based on a microscopic theory of doped Mott insulators. In this framework, the “Fermi-arc” and “kink” phenomena observed by angle-resolved photoemission spectroscopy experiments in the pseudogap phase can be systematically explained as a function of doping, which are further connected to the two-gap feature in the superconducting phase with dichotomy between the nodal and antinodal physics. We demonstrate that a phase-string-induced fractionalization plays the key role in giving rise to such a peculiar Green's function with a unique two-component structure.

中文翻译：

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现象学的单粒子格林函数对高碳酸盐的拟间隙和超导相的作用

我们基于掺杂的Mott绝缘子的微观理论，提出了一种现象学的格林函数，用于表征铜酸盐的超导相和伪间隙相。在此框架中，可以将角度分辨光发射光谱实验在伪间隙相中观察到的“费米电弧”和“扭结”现象作为掺杂的函数进行系统地解释，这些现象还与超导中的双间隙特征有关。在节点物理和反节点物理之间进行二分法。我们证明了相串诱导的分馏在产生具有独特的两组分结构的这种奇特的格林函数中起着关键作用。