Convergent expansions of eigenvalues of the generalized Friedrichs model with a rank-one perturbation

Saidakhmat Lakaev, Shakhzod Kurbanov

We study the existence of eigenvalues of the generalized Friedrichs model $H_{\mu }(p)$, with a rank-one perturbation, depending on parameters $\mu >0$ and $p\in {\mathbb{T}}^2$, and found an…