On an exactly solvable toy model and its dynamics

@article{Yang2019OnAE,
  title={On an exactly solvable toy model and its dynamics},
  author={K. L. Yang and J. M. Zhang},
  journal={European Journal of Physics},
  year={2019},
  volume={40}
}
The eigenstates and eigenenergies of a toy model, which arose in idealizing a local quenched tight-binding model in a previous publication (Zhang and Yang 2016 Europhys. Lett. 114 60001), are solved analytically. This enables us to study its dynamics in a different way. This model can serve as a good exercise in quantum mechanics at the undergraduate level. 

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