Preprint
Sep 2026
A renormalized Lee Model: resolvent and spectral analysis
We construct and analyze a renormalized three-dimensional massive Lee model; its renormalized Hamiltonian is defined intrinsically through an abstract construction which explicitly provides the operator domain, action and a Kre\u\i n-like resolvent formula. Conservation of the total excitation number reduces the spectr...
C. Cacciapuoti, F. Muscolino, D. Noja et al.
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