Feynman-Dyson perturbation theory applied to model linear polyenes

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dc.contributor.authorReid, Richard D.en
dc.contributor.committeechairSchug, John C.en
dc.contributor.committeememberViers, James W.en
dc.contributor.committeememberSanzone, Georgeen
dc.contributor.committeememberBell, Harold M.en
dc.contributor.committeememberHanson, Brian E.en
dc.contributor.departmentChemistryen
dc.date.accessioned2017-03-10T21:54:35Zen
dc.date.available2017-03-10T21:54:35Zen
dc.date.issued1986en
dc.description.abstractIn the work described in this thesis, the Feynman-Dyson perturbation theory, developed from quantum field theory, was employed in semiempirical calculations on trans - polyacetylene. A variety of soliton-like excited states of the molecule were studied by the PPP-UHF-RPA method. The results of this study provide useful information on the nature of these states, which are thought to account for the unique electrical conduction properties of trans - polyacetylene and similar conducting polymers. Feynman-Dyson perturbation theory was also used to extend Hartree-Fock theory by the inclusion of time-independent second-order self-energy insertions. The results of calculations on polyenes show that consideration of this approach is warranted, as the contribution of the second- order terms is significant. The computer program, written during the course of the research reported here, is discussed as well.en
dc.description.degreePh. D.en
dc.format.extentvii, 125 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/76488en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 16506432en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1986.R44en
dc.subject.lcshFeynman diagramsen
dc.subject.lcshPolyacetylenesen
dc.subject.lcshQuantum theoryen
dc.subject.lcshSolid state physicsen
dc.titleFeynman-Dyson perturbation theory applied to model linear polyenesen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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