Fictive Impurity Approach to Dynamical Mean Field Theory
Fictive Impurity Approach to Dynamical Mean Field Theory
dc.contributor.advisor | Monien, Hartmut | |
dc.contributor.author | Fuhrmann, Andreas | |
dc.date.accessioned | 2020-04-08T23:10:05Z | |
dc.date.available | 2020-04-08T23:10:05Z | |
dc.date.issued | 2006 | |
dc.identifier.uri | https://hdl.handle.net/20.500.11811/2646 | |
dc.description.abstract | A new extension of the dynamical mean-field theory was investigated in the regime of large Coulomb repulsion. A number of physical quantities such as single-particle density of states, spin-spin correlation, internal energy and Neel temperature, were computed for a two-dimensional Hubbard model at half-filling. The numerical data were compared to our analytical results as well as to the results computed using the dynamical cluster approximation. In the second part of this work we consider a two-plane Hubbard model. The transport properties of the bilayer were investigated and the phase diagram was obtained. | |
dc.language.iso | eng | |
dc.rights | In Copyright | |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | |
dc.subject | Hubbard Modell | |
dc.subject | DMFT | |
dc.subject | Neel Phasenübergang | |
dc.subject | SCA | |
dc.subject | Energie | |
dc.subject | Zustandsdichte | |
dc.subject | Spin-Spin Korrelation | |
dc.subject | Phasenübergang | |
dc.subject | optische Leitfähigkeit | |
dc.subject | Band Isolator | |
dc.subject | Mott Isolator | |
dc.subject | Phasendiagramm | |
dc.subject.ddc | 530 Physik | |
dc.title | Fictive Impurity Approach to Dynamical Mean Field Theory | |
dc.type | Dissertation oder Habilitation | |
dc.publisher.name | Universitäts- und Landesbibliothek Bonn | |
dc.publisher.location | Bonn | |
dc.rights.accessRights | openAccess | |
dc.identifier.urn | https://nbn-resolving.org/urn:nbn:de:hbz:5N-08208 | |
ulbbn.pubtype | Erstveröffentlichung | |
ulbbnediss.affiliation.name | Rheinische Friedrich-Wilhelms-Universität Bonn | |
ulbbnediss.affiliation.location | Bonn | |
ulbbnediss.thesis.level | Dissertation | |
ulbbnediss.dissID | 820 | |
ulbbnediss.date.accepted | 07.07.2006 | |
ulbbnediss.fakultaet | Mathematisch-Naturwissenschaftliche Fakultät | |
dc.contributor.coReferee | Millis, Andrew J. |
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