Unconventional critical exponents at dynamical quantum phase transitions in a random Ising chain

@article{Trapin2021UnconventionalCE,
  title={Unconventional critical exponents at dynamical quantum phase transitions in a random Ising chain},
  author={Daniele Trapin and Jad C. Halimeh and Markus Heyl},
  journal={Physical Review B},
  year={2021}
}
Dynamical quantum phase transitions (DQPTs) feature singular temporal behavior in transient quantum states during nonequilibrium real-time evolution. In this work we show that DQPTs in random Ising chains exhibit critical behavior with nontrivial exponents that are not integer valued and not of mean-field type. By means of an exact renormalization group transformation we estimate the exponents with high accuracy eliminating largely any finite-size effects. We further discuss how the considered… 

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