论文标题
来自空间随机相互作用的奇怪金属的通用理论
Universal theory of strange metals from spatially random interactions
论文作者
论文摘要
我们考虑了耦合到量子临界标量的二维金属，后者代表阶参数或新兴量规场。我们表明，在低温（$ t $）下，这种金属通常表现出奇怪的金属行为，而$ t $线性的电阻率是由于Fermion-Scalar Yukawa耦合在非零空间平均值中的空间随机波动而产生的。我们还发现了一个$ t \ ln（1/t）$特定的热量，以及在运输散射时间上的普朗克式结合的基本原理。这些结果是在重要的$ N $扩展中获得的。
We consider two-dimensional metals of fermions coupled to quantum critical scalars, the latter representing order parameters or emergent gauge fields. We show that at low temperatures ($T$), such metals generically exhibit strange metal behavior with a $T$-linear resistivity arising from spatially random fluctuations in the fermion-scalar Yukawa couplings about a non-zero spatial average. We also find a $T\ln (1/T)$ specific heat, and a rationale for the Planckian bound on the transport scattering time. These results are obtained in the large $N$ expansion of an ensemble of critical metals.
