Perturbation of embedded eigenvalues : A general class of exactly soluble models in Fock spaces
Perturbation of embedded eigenvalues : A general class of exactly soluble models in Fock spaces
Perturbation problem of embedded eigenvalues is considered for operators with infinite degrees of freedom acting in the tensor product of L^{2}(R) and the Boson Fock space over a Hilbert space -A general class of operators for which the problem is "exactly soluble" is construct ed.In the case \mathscr{H}=L^{2}(R^{d}) , the …