Holographic non-Fermi-liquid fixed points
Holographic non-Fermi-liquid fixed points
复制标题
DOI：
10.1098/rsta.2010.0354
复制
发表时间：
2011-01
期刊：
影响因子：
--
通讯作者：
T. Faulkner;N. Iqbal;Hong Liu;J. McGreevy;David Vegh
中科院分区：
文献类型：
--
作者：
T. Faulkner;N. Iqbal;Hong Liu;J. McGreevy;David Vegh
从弦理论衍生出来的技术可以用来研究强相互作用费米子的集合。通过这种“全息对偶性”，各种强耦合的多体系统可以用引力的辅助理论来解决。有限密度的简单全息实现呈现出具有尖锐费米面的单粒子谱函数，其形式不同于朗道理论的形式。自能由红外（IR）固定点理论中的相关函数给出，该理论由对偶引力描述中的二维反德西特空间（AdS2）区域表示。在这里，我们详细描述了这个IR相关函数的重力计算。
Techniques arising from string theory can be used to study assemblies of strongly interacting fermions. Via this ‘holographic duality’, various strongly coupled many-body systems are solved using an auxiliary theory of gravity. Simple holographic realizations of finite density exhibit single-particle spectral functions with sharp Fermi surfaces, of a form distinct from those of the Landau theory. The self-energy is given by a correlation function in an infrared (IR) fixed-point theory that is represented by a two-dimensional anti de Sitter space (AdS2) region in the dual gravitational description. Here, we describe in detail the gravity calculation of this IR correlation function.