Effective models for the single impurity Anderson and Kondo model from continuous unitary transformations
| dc.contributor.advisor | Uhrig, Götz Silvester | |
| dc.contributor.author | Krones, Jörn | |
| dc.contributor.referee | Anders, Frithjof | |
| dc.date.accepted | 2014-11-27 | |
| dc.date.accessioned | 2014-12-12T07:43:30Z | |
| dc.date.available | 2014-12-12T07:43:30Z | |
| dc.date.issued | 2014 | |
| dc.description.abstract | The method of continuous unitary transformations (CUTs) is applied to the Anderson impurity and the Kondo model aiming at the systematic derivation of convergent e ective models. If CUTs are applied in a conventional way, diverging di erential equations occur. Similar to poor mans scaling the energy scale, below which the couplings diverge, corresponds to the Kondo temperature TK. We present a way to apply CUTs to the Kondo and to the Anderson impurity model so that no divergences occur but a converged e ective low-energy model is derived with small nite parameters at arbitrarily small energies. The ground state corresponds to a bound singlet with a binding energy given by the Kondo temperature TK. | en |
| dc.identifier.uri | http://hdl.handle.net/2003/33785 | |
| dc.identifier.uri | http://dx.doi.org/10.17877/DE290R-6863 | |
| dc.language.iso | en | en |
| dc.subject | Continuous unitary transformations | en |
| dc.subject | CUT | en |
| dc.subject | Flow equation | en |
| dc.subject | Kondo effect | en |
| dc.subject | Kondo model | en |
| dc.subject | Anderson impurity model | en |
| dc.subject | Effective models | en |
| dc.subject.ddc | 530 | |
| dc.subject.rswk | Supraleitung | de |
| dc.subject.rswk | Kondo-Effekt | de |
| dc.title | Effective models for the single impurity Anderson and Kondo model from continuous unitary transformations | en |
| dc.type | Text | de |
| dc.type.publicationtype | doctoralThesis | en |
| dcterms.accessRights | open access |