Spectral function of the 2D Hubbard model: a density matrix renormalization group plus cluster perturbation theory study
Strongly Correlated Electrons
2016-03-09 v1
Abstract
We study the spectral function of the 2D Hubbard model using cluster perturbation theory, and the density matrix renormalization group as a cluster solver. We reconstruct the two-dimensional dispersion at, and away from half-filling using 2xL ladders, with L up to 80 sites, yielding results with unprecedented resolution in excellent agreement with quantum Monte Carlo. The main features of the spectrum can be described with a mean-field dispersion, while kinks and pseudogap traced back to scattering between spin and charge degrees of freedom.
Cite
@article{arxiv.1512.06102,
title = {Spectral function of the 2D Hubbard model: a density matrix renormalization group plus cluster perturbation theory study},
author = {Chun Yang and Adrian E. Feiguin},
journal= {arXiv preprint arXiv:1512.06102},
year = {2016}
}
Comments
5 pages, 3 figures