Quench dynamics in randomly generated extended quantum models

@article{Brandino2012QuenchDI,
  title={Quench dynamics in randomly generated extended quantum models},
  author={Giuseppe Piero Brandino and Andrea De Luca and Robert Konik and Giuseppe Mussardo},
  journal={Physical Review B},
  year={2012},
  volume={85},
  pages={214435}
}
We analyze the thermalization properties and the validity of the eigenstate thermalization hypothesis in a generic class of quantum Hamiltonians where the quench parameter explicitly breaks a Z2 symmetry. Natural realizations of such systems are given by random matrices expressed in a block form where the terms responsible for the quench dynamics are the off-diagonal blocks. Our analysis examines both dense and sparse random matrix realizations of the Hamiltonians and the observables. Sparse… 
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