Evidences for non-Fermi liquid behavior of quantum wires

The present understanding of the physics of correlated electrons in quantum wires is explained by using two representative examples. Non-Fermi liquid collective excitations are obtained within the Luttinger liquid model. Char ge and spin density modes are considered and compared with the data from re sonant Raman scattering experiments. The results indicate that interactions dominate the low-frequency collective modes. The interplay in DC-transport between interaction, spin, backscattering by impurities and inhomogeneity is discussed and compared with recent experiments. (C) 2001 Elsevier Scienc e B.V. All rights reserved.