Localized systems coupled to small baths: From Anderson to Zeno

@article{Huse2015LocalizedSC,
  title={Localized systems coupled to small baths: From Anderson to Zeno},
  author={David A. Huse and Rahul M. Nandkishore and Francesca Pietracaprina and Valentina Ros and Antonello Scardicchio},
  journal={Physical Review B},
  year={2015},
  volume={92},
  pages={014203}
}
We investigate what happens if an Anderson localized system is coupled to a small bath, with a discrete spectrum, when the coupling between system and bath is specially chosen so as to never localize the bath. We find that the effect of the bath on localization in the system is a nonmonotonic function of the coupling between system and bath. At weak couplings, the bath facilitates transport by allowing the system to ``borrow'' energy from the bath. But, above a certain coupling the bath… 

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