Localization in non-Hermitian quantum mechanics and flux-line pinning in superconductors

Naomichi Hatano

Physica A: Statistical Mechanics and its Applications, 1998, vol. 254, issue 1, 317-331

Abstract: A recent development in studies of random non-Hermitian quantum systems is reviewed. Delocalization was found to occur under a sufficiently large constant imaginary vector potential even in one and two dimensions. The phenomenon has a physical realization as flux-line depinning in type-II superconductors. Relations between the delocalization transition and the complex energy spectrum of the non-Hermitian systems are described. Analytical and numerical results obtained for a non-Hermitian Anderson model are shown.

Keywords: Localization; Non-Hermitian; Flux-line pinning; Type-II superconductor (search for similar items in EconPapers)
Date: 1998
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:254:y:1998:i:1:p:317-331

DOI: 10.1016/S0378-4371(98)00010-7

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