REGULAR PERTURBATIONS IN A VECTOR SPACE WITH INDEFINITE METRIC

摘要

The theory of regular perturbation of self-adjoint operators in a Hilbert space has been developed by several authors, and the criteria for regular perturbation have been applied to various problems in quantum mechanics. Attempts have also been made to apply the criteria in disforn of norm to some model quantum field theories to discuss above all, the existence of strong asymptotic limits of field operators in a Hilbert space.