超导体-金属量子相变的无限随机不动点
Infinite randomness fixed point of the superconductor-metal quantum phase transition
摘要：
我们研究了淬火无序对超导体-金属过渡的影响，描述了过阻尼库珀对相互排斥的理论。用数值方法确定了准一维金属丝的自洽配对本征模。我们的结果支持Hoyos等人（arXiv：0705.1865）最近的提议，即跃迁的特征在于描述横场中随机量子伊辛链中铁磁性开始的相同的强无序不动点。
英文摘要：
We examine the influence of quenched disorder on the superconductor-metal transition, as described by a theory of overdamped Cooper pairs which repel each other. The self-consistent pairing eigenmodes of a quasi-one dimensional wire are determined numerically. Our results support the recent proposal by Hoyos et al. (arXiv:0705.1865) that the transition is characterized by the same strong disorder fixed point describing the onset of ferromagnetism in the random quantum Ising chain in a transverse field.
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