Field Theory Approach to Many-Body Localization.

  title={Field Theory Approach to Many-Body Localization.},
  author={Alexander Altland and T. Micklitz},
  journal={Physical review letters},
  volume={118 12},
We introduce an analytic approach to many-body localization (MBL) in random spin chains. We consider MBL within a first quantized framework where it becomes a localization phenomenon in the high-dimensional lattice defined by the Hilbert space of the clean system. Designed in analogy with the field-theory description of single particle localization, our approach describes wave package propagation on that lattice after a disorder average has been performed and the system is controlled by only a… 

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