论文标题
全息图模型中各向异性量子临界连续性的淋巴结 - 抗原二分法
Nodal-antinodal dichotomy from anisotropic quantum critical continua in holographic models
论文作者
论文摘要
我们证明，在费米表面的一部分上缺乏稳定的准粒子激发，类似于在不足的铜酸盐超导体中的“淋巴结 - 抗氨基氨基二分法”，可以在通过全息二个二元定义的强相关电子的模型中复制。我们分析表明，这些模型的特征量子临界连续体的各向异性可能会导致在一个方向上沿一个方向洗涤准峰峰，而在垂直方面保持完整。该效果依赖于在不同方向上自我能源的质量缩放范围。使用各向异性Q-局势模型的明确示例，我们演示了这种效果如何由于双重描述中黑洞的近地平线几何形状的特定特征而出现。
We demonstrate that the absence of stable quasiparticle excitations on parts of the Fermi surface, similar to the "nodal-antinodal dichotomy" in underdoped cuprate superconductors, can be reproduced in models of strongly correlated electrons defined via a holographic dual. We show analytically that the anisotropy of the quantum critical continuum, which is a feature of these models, may lead to washing out the quasiparticle peak in one direction while leaving it intact in the perpendicular one. The effect relies on the qualitatively different scaling of the self-energy in different directions. Using the explicit example of the anisotropic Q-lattice model, we demonstrate how this effect emerges due to specific features of the near horizon geometry of the black hole in the dual description.
