• Corpus ID: 211171460

Many-body delocalization via symmetry emergence

@article{Srivatsa2020ManybodyDV,
  title={Many-body delocalization via symmetry emergence},
  author={N. S. Srivatsa and Roderich Moessner and Anne Ellerup Nielsen},
  journal={arXiv: Disordered Systems and Neural Networks},
  year={2020}
}
Many-body localization (MBL) provides a mechanism to avoid thermalization in many-body quantum systems. Here, we show that an {\it emergent} symmetry can protect a state from MBL. Specifically, we propose a $\Z_2$ symmetric model with nonlocal interactions, which has an analytically known, SU(2) invariant, critical ground state. At large disorder strength all states at finite energy density are in a glassy MBL phase, while the lowest energy states are not. These do, however, localize when a… 

Figures from this paper

References

SHOWING 1-10 OF 34 REFERENCES

New Journal of Physics 16

  • 033025
  • 2014

Phys

  • Rev. B 81, 104431
  • 2010

Phys

  • Rev. Lett. 113, 107204
  • 2014

Journal of Statistical Mechanics Theory and Experiment 2011 Gilbert

  • 2011

Annual review of condensed matter physics

Science 349

  • 842
  • 2015

Phys

  • Rev. B 92, 104428
  • 2015

Phys

  • Rev. B 95, 035119
  • 2017

Phys

  • Rev. B 50, 3799
  • 1994