We show that the Friedrichs–Lee model, which describes the one-excitation sector of a two-level atom interacting with a structured boson field, can be generalized to singular atom–field couplings. We provide a characterization of its spectrum and resonances and discuss the inverse spectral problem.
Spectral properties of the singular Friedrichs–Lee Hamiltonian
Paolo Facchi;Marilena Ligabò;Davide Lonigro
2021-01-01
Abstract
We show that the Friedrichs–Lee model, which describes the one-excitation sector of a two-level atom interacting with a structured boson field, can be generalized to singular atom–field couplings. We provide a characterization of its spectrum and resonances and discuss the inverse spectral problem.File in questo prodotto:
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