Corpus ID: 235266192

Dynamical quantum phase transition in quantum spin chains with gapless phases

@inproceedings{Cao2021DynamicalQP,
  title={Dynamical quantum phase transition in quantum spin chains with gapless phases},
  author={Kaiyuan Cao and Zhong Ming and Peiqing Tong},
  year={2021}
}
The dynamical quantum phase transitions (DQPTs) in quantum spin chains with gapless phases after a sudden quench are studied. We mainly consider the general systems with asymmetrical quasiparticle excitation spectra and obtain the general expression of the Loschmidt echo as well as the general conditions for the occurrence of DQPTs. As two examples, we study the DQPTs in the XY chains with Dzyaloshinskii-Moriya interaction and XZY-YZX type of three-site interaction. It’s found that the DQPTs… Expand

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References

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