Quasiclassical Methods for Correlated Electron Systems

In this project we apply quasiclassical methods to correlated electronic systems, i.e. systems in which dynamical fluctuations of the charges and the spins are of central importance. For example, we study the applicability of these methods to Luttinger liquids, in particular, in the presence of random defects. Indeed experimentally measured zero-bias anomalies in copper nano-bridges can be explained via dynamical charge fluctuations – while the role of the corresponding spin fluctuations is still an open question. In the next step we will investigate, with the help of the extended “quasiclassics”, thermo-electric effects in disordered metals.