Gutzwiller-RVB theory of high temperature superconductivity [Elektronische Ressource] : results from renormalized mean field theory and variational Monte Carlo calculations / von Bernhard Edegger

Gutzwiller-RVB Theory ofHigh Temperature Superconductivity:Results fromRenormalized Mean Field Theory andVariational Monte Carlo CalculationsDissertationzur Erlangung des Doktorgradesder Naturwissenschaftenvorgelegt beim Fachbereich Physikder Johann Wolfgang Goethe-Universit atin Frankfurt am MainvonBernhard Edeggeraus DeutschlandsbergFrankfurt 2007vom Fachbereich Physikder Johann Wolfgang Goethe-Universit atals Dissertation angenommen.Dekan: Prof. Dr. W. AßmusGutachter: Prof. Dr. C. GrosProf. Dr. P. W. AndersonDatum der Disputation: 13.03.20071Abstract of the thesisWeconsiderthetheoryofhightemperaturesuperconductivityfromtheview-point of a strongly correlated electron system. In particular, we discussGutzwiller projected wave functions, which incorporate strong correlationsby prohibiting double occupancy in orbitals with strong on-site repulsion.After a general overview on high temperature superconductivity, we discussAnderson’s resonating valence bond (RVB) picture and its implementationby renormalized mean field theory (RMFT) and variational Monte Carlo(VMC) techniques. In the following, we present a detailed review on RMFTand VMC results with emphasis on our recent contributions. Especially,we are interested in spectral features of Gutzwiller-Bogoliubov quasiparti-cles obtained by extending VMC and RMFT techniques to excited states.