title: One-dimensional disordered density waves and superfluids: the role of quantum phase slips and thermal fluctuations.
abstract: The low temperature phase diagram of 1D disordered quantum systems such as charge or spin density waves, superfluids, and related systems is considered by a full finite- T renormalization group approach for the first time. At zero temperature the consideration of quantum phase slips leads to a new scenario for the unpinning (delocalization) transition. In the strong pinning limit the model is solved exactly. At finite T a rich crossover diagram with various scaling regions is found which reflects the zero temperature quantum critical behavior.
authors.affiliation: Institut für Theoretische Physik, Universität zu Köln, Zülpicher Strasse 77, D-50937 Köln, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Glatz
authors.forename: Thomas
authors.initials: T
authors.lastname: Nattermann