Geometric Origin of Non-Bloch PT Symmetry Breaking
Published in Physical Review Letters, 2024
This paper studies parity-time symmetry in non-Hermitian systems with the skin effect and shows that non-Bloch PT symmetry breaking is governed by a precise geometric mechanism. In particular, the transition is tied to cusp formation in the generalized Brillouin zone, which leads to an exact threshold formula and a new class of non-Bloch van Hove singularities in linear response.
Published version: Physical Review Letters
Preprint: arXiv:2210.13491
Recommended citation: Yu-Min Hu, Hong-Yi Wang, Zhong Wang, and Fei Song. "Geometric Origin of Non-Bloch PT Symmetry Breaking." Physical Review Letters 132, 050402 (2024).
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