Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 24: Correlated Electrons: Low-dimensional Systems - Models

TT 24.6: Vortrag

Mittwoch, 27. Februar 2008, 15:15–15:30, H 2053

Effects of dissipation on disordered Luttinger liquids — •Zoran Ristivojevic and Thomas Nattermann — Institut für Theoretische Physik, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany

We study theoretically the low energy properties of 1D Luttinger liquids in the presence of dissipation and disorder. Both the case of a single impurity (Kane-Fisher) and that of gaussian randomness (Giamarchi-Schulz) are considered in a renormalization group approach. We show that dissipation drastically changes the phase diagram and the conductance/conductivity in both cases. The approach is an extension of recent work of Cazallila et al. (Phys. Rev. Lett. 97, 076401 (2006)).