One-electron spectral functions of the attractive Hubbard model at intermediate coupling
Strongly Correlated Electrons
2009-10-31 v1
Abstract
We calculate the one-electron spectral function of the attractive-U Hubbard model in two dimensions. We work in the intermediate coupling and low density regime and evaluate analytically the self-energy. The results are obtained in a framework based on the self-consistent T-matrix approximation. We also calculate the chemical potential of the bound pairs as a function of temperature. On the basis of this calculation we analyze the low-temperature resistivity and specific heat in the normal state of this system. We compare our results with recent beautiful tunneling experiments in the underdoped regime of HTSC-materials.
Cite
@article{arxiv.cond-mat/9911337,
title = {One-electron spectral functions of the attractive Hubbard model at intermediate coupling},
author = {M. Yu. Kagan and R. Fresard and M. Capezzali and H. Beck},
journal= {arXiv preprint arXiv:cond-mat/9911337},
year = {2009}
}
Comments
2 pages, LT22 Conference paper, phbauth and elsart style files included