
Accession Number : AD0657566
Title : CONSTRUCTION OF EIGENFUNCTION EXPANSIONS BY THE PERTURBATION METHOD AND ITS APPLICATION TO NDIMENSIONAL SCHRODINGER OPERATIONS.
Descriptive Note : Technical summary rept.,
Corporate Author : WISCONSIN UNIV MADISON MATHEMATICS RESEARCH CENTER
Personal Author(s) : Kuroda,S. T.
Report Date : MAY 1967
Pagination or Media Count : 61
Abstract : An operatortheoretical approach to the construction of eigenfunction expansions by the perturbation method is discussed. Eigenfunction expansions in this paper mean those associated with continuous spectra. The method is to combine a stationary approach to the scattering theory with the now well developed idea of formulating generalized eigenfunction expansions in terms of a triplet of spaces. Given an expansion associated with the unperturbed operator, two complete sets of eigenfunctions of the perturbed operator are constructed and shown to be the unique solution of the LippmannSchwinger equation in a modified form. As an application, spectral properties of the ndimensional Schrodinger operator delta + f(x) are investigated in detail.
Descriptors : (*FUNCTIONS(MATHEMATICS), PERTURBATION THEORY), (*OPERATORS(MATHEMATICS), QUANTUM THEORY), SCATTERING, MAPPING(TRANSFORMATIONS), HILBERT SPACE, INEQUALITIES, THEOREMS
Subject Categories : Theoretical Mathematics
Quantum Theory and Relativity
Distribution Statement : APPROVED FOR PUBLIC RELEASE