Hunting for the non-Hermitian exceptional points with fidelity susceptibility
The fidelity susceptibility has been used to detect quantum phase transitions in the Hermitian quantum many-body systems over a decade, where the fidelity susceptibility density approaches +∞ in the thermodynamic limits. Here the fidelity susceptibility χ is generalized to non-Hermitian quantum syst...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2021-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.013015 |