Fermi Surface of the 2D Hubbard Model at Weak Coupling
Strongly Correlated Electrons
2009-10-28 v2
Abstract
We calculate the interaction-induced deformation of the Fermi surface in the two-dimensional Hubbard model within second order perturbation theory. Close to half-filling, interactions enhance anisotropies of the Fermi surface, but they never modify the topology of the Fermi surface in the weak coupling regime.
Cite
@article{arxiv.cond-mat/9610216,
title = {Fermi Surface of the 2D Hubbard Model at Weak Coupling},
author = {Christoph J. Halboth and Walter Metzner},
journal= {arXiv preprint arXiv:cond-mat/9610216},
year = {2009}
}
Comments
4 pages, LaTeX2e, 5 embedded EPS figures, accepted to be published in Z. Phys. B