Incommensurate antiferromagnetic fluctuations in the two-dimensional Hubbard model
Strongly Correlated Electrons
2013-05-29 v2
Abstract
Commensurate and incommensurate antiferromagnetic fluctuations in the two-dimensional repulsive t-t'-Hubbard model are investigated using functional renormalization group equations. For a sufficient deviation from half filling we establish the existence of local incommensurate order below a pseudocritical temperature T_{pc}. Fluctuations not accounted for in the mean field approximation are important--they lower T_{pc} by a factor \approx2.5.
Cite
@article{arxiv.0903.3168,
title = {Incommensurate antiferromagnetic fluctuations in the two-dimensional Hubbard model},
author = {H. C. Krahl and S. Friederich and C. Wetterich},
journal= {arXiv preprint arXiv:0903.3168},
year = {2013}
}
Comments
7 pages, 8 figures, some changes due to referees' comments, equivalent to published version