dc.contributor.author | Delogu, Richard. | en_US |
dc.date.accessioned | 2009-07-09T17:31:08Z | |
dc.date.available | 2009-07-09T17:31:08Z | |
dc.date.issued | 1985-07-09T17:31:08Z | |
dc.identifier.uri | http://hdl.handle.net/10464/1726 | |
dc.description.abstract | The Zubarev equation of motion method has been applied to an anharmonic
crystal of O( ,,4). All possible decoupling schemes have been interpreted in
order to determine finite temperature expressions for the one phonon Green's
function (and self energy) to 0()\4) for a crystal in which every atom is on a
site of inversion symmetry. In order to provide a check of these results, the
Helmholtz free energy expressions derived from the self energy expressions,
have been shown to agree in the high temperature limit with the results
obtained from the diagrammatic method. Expressions for the correlation
functions that are related to the mean square displacement have been derived
to 0(1\4) in the high temperature limit. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Brock University | en_US |
dc.subject | Green's functions. | en_US |
dc.subject | Lattice functions. | en_US |
dc.subject | Equations of motion. | en_US |
dc.subject | Phonons. | en_US |
dc.title | An analysis of decoupling procedures in generating thermal Green's functions of O([lambda]â ´) by the Zubarev equation of motion method | en_US |
dc.type | Electronic Thesis or Dissertation | en_US |
dc.degree.name | M.Sc. Physics | en_US |
dc.degree.level | Masters | en_US |
dc.contributor.department | Department of Physics | en_US |
dc.degree.discipline | Faculty of Mathematics and Science | en_US |