Experimentally testing quantum critical dynamics beyond the Kibble–Zurek mechanism

@article{Cui2020ExperimentallyTQ,
  title={Experimentally testing quantum critical dynamics beyond the Kibble–Zurek mechanism},
  author={Jin-Ming Cui and Fernando J. G{\'o}mez-Ruiz and Yun-Feng Huang and Chuan-Feng Li and Guangcan Guo and Adolfo del Campo},
  journal={Communications Physics},
  year={2020},
  volume={3},
  pages={1-7}
}
The Kibble–Zurek mechanism (KZM) describes the dynamics across a phase transition leading to the formation of topological defects, such as vortices in superfluids and domain walls in spin systems. Here, we experimentally probe the distribution of kink pairs in a one-dimensional quantum Ising chain driven across the paramagnet-ferromagnet quantum phase transition, using a single trapped ion as a quantum simulator in momentum space. The number of kink pairs after the transition follows a Poisson… 
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