• Corpus ID: 214743432

Paradigm shift for quantum paraelectric: softening of longitudinal modes

@article{Kedem2020ParadigmSF,
  title={Paradigm shift for quantum paraelectric: softening of longitudinal modes},
  author={Yaron Kedem},
  journal={arXiv: Materials Science},
  year={2020}
}
  • Y. Kedem
  • Published 31 March 2020
  • Materials Science, Physics
  • arXiv: Materials Science
We revisit the quantum phase transition from a paraelectric state to a ferroelectric one and in particular the widespread distinction between a longitudinal modes to transverse one. In contrast to transitions at finite temperature, for a quantum phase transition breaking a discrete symmetry the splitting between the modes is irrelevant. We show that an anisotropy in the context of a quantum phase transition leads to a different behavior, compared to a classical transition, and suggest an… 

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