Ferromagnetic Luttinger Liquids
Strongly Correlated Electrons
2009-11-07 v1
Abstract
We study weak itinerant ferromagnetism in one-dimensional Fermi systems using perturbation theory and bosonization. We find that longitudinal spin fluctuations propagate ballistically with velocity v_m << v_F, where v_F is the Fermi velocity. This leads to a large anomalous dimension in the spin-channel and strong algebraic singularities in the single-particle spectral function and in the transverse structure factor for momentum transfers q ~ 2 Delta/v_F, where 2 Delta is the exchange splitting.
Keywords
Cite
@article{arxiv.cond-mat/0207383,
title = {Ferromagnetic Luttinger Liquids},
author = {Lorenz Bartosch and Marcus Kollar and Peter Kopietz},
journal= {arXiv preprint arXiv:cond-mat/0207383},
year = {2009}
}
Comments
4 pages, 3 figures