Perturbation theory in the complex plane: exceptional points and where to find them
We explore the non-Hermitian extension of quantum chemistry in the complex plane and its link with perturbation theory. We observe that the physics of a quantum system is intimately connected to the position of complex-valued energy singularities, known as exceptional points. After presenting the fu...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
IOP Publishing
2021
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