Non-Hermitian generalization of Rayleigh-Schrödinger perturbation theory
The authors develop a perturbation theory for non-Hermitian systems based on a geometric formalism that yields relatively simple recursive formulas for the perturbed eigenvectors and eigenvalues. The authors provide an example and show that the method proposed reduces to the standard Rayleigh-Schr"odinger perturbation theory in the Hermitian regime.
Authors
- Chia-Yi Ju (ORCID: https://orcid.org/0000-0001-7038-3375)
- Wei-Ming Chen (ORCID: https://orcid.org/0000-0002-9443-5747)
- Yen-Ting Lin
Institutions
- National Sun Yat-sen University (TW)
- National Center for Theoretical Sciences (TW)
Publication Details
- Journal
- Physical review. A/Physical review, A
- Published
- 2025-02-07
- DOI
- https://doi.org/10.1103/physreva.111.022211
- Citations
- 4
- Primary Topic
- Quantum Mechanics and Non-Hermitian Physics
- Type
- article
- Field-Weighted Citation Impact
- 4.99