| Zugriffsnummer | 21327 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Transport through correlated quantum dots using the functional renormalization group |
| Autor(in); Institution |
Weyrauch, Michael; PSt, Präsidialer Stab, PTB-Braunschweig
Sibold, Dieter; Q, Wissenschaftlich-technische Querschnittsaufgaben, PTB-Braunschweig
|
| Quelle/Jahr | Physical Review B: 77 (2008), 125309-1 - 125309-10 |
| ISSN | 1098-0121 |
| DOI | |
| Verlag | Ridge, NY: APS |
| Klassifikationscode | PACS: 73.63.Kv ; PACS: 73.23.Hk |
| Zusammenfassung | Calculations using the (exact) fermionic functional renormalization group are usually truncated at second order of the corresponding hierarchy of coupled ordinary differential equations. We present a method for the systematic determination of higher order vertex functions. This method is applied to a study of transport properties of various correlated quantum dot systems. It is shown that for large Coulomb correlations higher order vertex functions cannot be neglected and a static approximation is insufficient. |
