General properties of fidelity in non-Hermitian quantum systems with PT symmetry
The fidelity susceptibility is a tool for studying quantum phase transitions in the Hermitian condensed matter systems. Recently, it has been generalized with the biorthogonal basis for the non-Hermitian quantum systems. From the general perturbation description with the constraint of parity-time (P...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2023-03-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2023-03-23-960/pdf/ |