Franz M, Tesanović Z
Institute for Theoretical Physics, University of California, Santa Barbara, California 93106.
Phys Rev Lett. 2001 Dec 17;87(25):257003. doi: 10.1103/PhysRevLett.87.257003. Epub 2001 Dec 3.
Within the phase fluctuation model for the pseudogap state of cuprate superconductors we identify a novel statistical "Berry phase" interaction between the nodal quasiparticles and fluctuating vortex-antivortex excitations. The effective action describing this model assumes the form of an anisotropic Euclidean quantum electrodynamics in (2+1) dimensions (QED (3)) and naturally generates non-Fermi liquid behavior for its fermionic excitations. The doping axis in the x -T phase diagram emerges as a quantum critical line which regulates the low energy fermiology.
在铜酸盐超导体赝能隙态的相位涨落模型中，我们识别出节点准粒子与波动的涡旋 - 反涡旋激发之间一种新型的统计“贝里相位”相互作用。描述该模型的有效作用量呈现为（2 + 1）维各向异性欧几里得量子电动力学（QED(3)）的形式，并自然地为其费米子激发产生非费米液体行为。x - T相图中的掺杂轴表现为一条调节低能费米子学的量子临界线。
