Bosonization for 2D Interacting Fermion Systems: Non-Fermi Liquid Behavior
arXiv:cond-mat/9401018 · doi:10.1142/S0217984994000078
Abstract
Non-Fermi liquid behavior is found for the first time in a two-dimensional (2D) system with non-singular interactions using Haldane's bosonization scheme. The bosonized system is solved exactly by a generalized Bogoliubov transformation. The fermion momentum distribution, calculated using a generalized Mattis-Lieb technique, exhibits a non-universal power law in the vicinity of the Fermi surface for intermediate interaction strengths.
13 pages, 2 figures upon request, latex. (to appear in Mod. Phys. Lett. B)