
Accession Number : AD0664073
Title : QUANTUM THEORY OF MANYPARTICLE SYSTEMS.
Descriptive Note : Final rept. 1 Sep 6531 Aug 67,
Corporate Author : UPPSALA UNIV (SWEDEN) QUANTUM CHEMISTRY GROUP
Personal Author(s) : Lowdin,PerOlov
Report Date : 31 AUG 1967
Pagination or Media Count : 25
Abstract : A brief summary is given of research directed towards the investigation of the electronic structure of atoms, molecules, and solidstate by means of quantummechanical methods. Results of particular importance have been obtained with respect to infiniteorder perturbation theory, upper and lower bounds to energy eigenvalues, properties of density matrices, and the general understanding of manybody systems and the correlation problem. Applications were carried out to study the properties of various systems, including light atoms, comparatively small molecules, very large molecules, alkali halides, and alkali metals. Largescale computations were carried out on the CD 3600 electronic computer available at Uppsala University.
Descriptors : (*ATOMIC ORBITALS, *QUANTUM THEORY), (*MOLECULAR ORBITALS, QUANTUM THEORY), (*BAND THEORY OF SOLIDS, QUANTUM THEORY), PERTURBATION THEORY, FIELD THEORY, GROUPS(MATHEMATICS), MATRICES(MATHEMATICS), ATOMIC ENERGY LEVELS, ELASTIC PROPERTIES, MOLECULAR ASSOCIATION, SWEDEN
Subject Categories : Atomic and Molecular Physics and Spectroscopy
Quantum Theory and Relativity
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE