Numéro |
J. Phys. IV France
Volume 12, Numéro 9, November 2002
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Page(s) | 123 - 126 | |
DOI | https://doi.org/10.1051/jp4:20020376 |
J. Phys. IV France 12 (2002) Pr9-123
DOI: 10.1051/jp4:20020376
Quantum phase slips and thermal fluctuations in one-dimensional disordered density waves
A. Glatz and T. NattermannInstitut fur Theoretische Physik, Universitat zu Koln, Zulpicher Str. 77, 50937 Koln, Germany
Abstract
The low temperature phase diagram of 1D disordered quantum systems like 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.
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