We discuss whether a simple theory of superconducting stripes coupled by Josephson tunneling can describe a metallic transport, once the coherent tunneling of pairs is suppressed by the magnetic field. For a clean system, the conclusion we reached is negative: the excitation spectrum of preformed pairs consists of Landau levels, and once the magnetic field exceeds a critical value, the transport becomes insulating. As a speculation, we suggest that a Bose metal can exist in disordered systems provided that the disorder is strong enough to localize some pairs. Then the coupling between propagating and localized pairs broadens the Landau levels, resulting in a metallic conductivity. Our model respects the particle-hole symmetry, which leads to a zero Hall response. And intriguingly, the resulting anomalous metallic state has no Drude peak and the spectral weight of the cyclotron resonance vanishes at low temperatures.

中文翻译：

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磁场如何将超导体转变为玻色金属

我们讨论了由约瑟夫森隧道耦合的超导条纹的简单理论是否可以描述金属传输，一旦对的相干隧道被磁场抑制。对于一个干净的系统，我们得出的结论是否定的：预制对的激发光谱由朗道能级组成，一旦磁场超过临界值，传输就会变得绝缘。作为一种推测，我们认为 Bose 金属可以存在于无序系统中，前提是该无序强度足以定位一些对。然后传播对和局部对之间的耦合扩大了朗道能级，导致金属导电性。我们的模型尊重粒子-空穴对称性，这导致霍尔响应为零。而且耐人寻味的是