Hawking radiation and nonequilibrium quantum critical current noise.
Hawking radiation and nonequilibrium quantum critical current noise.
复制标题
DOI：
10.1103/physrevlett.109.091601
复制
发表时间：
2012-03
影响因子：
8.6
通讯作者：
J. Sonner;A. Green
中科院分区：
文献类型：
--
作者：
J. Sonner;A. Green
处于热平衡态的量子临界系统的动力学标度性在驱动稳态中可能继承，导致普遍的失平衡行为。这个有吸引力的概念已经在几个案例中得到了证明。我们展示了如何全息-量子临界系统和引力对偶之间的映射-提供了一个启发性的观点和新的结果。非平凡的非平衡普适性在电流噪声中特别明显，它与引力系统中的霍金辐射是对偶的。我们计算这在一个二维系统驱动的强面内电场和推导出一个通用的尺度函数之间的插值先前建立的平衡和远离平衡电流噪声。由于这适用于所有领域，平衡实验不再需要非常高的领域与理论进行比较。
The dynamical scaling of quantum critical systems in thermal equilibrium may be inherited in the driven steady state, leading to universal out-of-equilibrium behavior. This attractive notion has been demonstrated in just a few cases. We demonstrate how holography-a mapping between the quantum critical system and a gravity dual-provides an illuminating perspective and new results. Nontrivial out-of-equilibrium universality is particularly apparent in current noise, which is dual to Hawking radiation in the gravitational system. We calculate this in a two-dimensional system driven by a strong in-plane electric field and deduce a universal scaling function interpolating between previously established equilibrium and far-from-equilibrium current noise. Since this applies at all fields, out-of-equilibrium experiments no longer require very high fields for comparison with theory.