Superconductivity in the Two-Band Hubbard Model in Infinite Dimensions
Condensed Matter
2009-10-22 v1
Abstract
We study a two-band Hubbard model in the limit of infinite dimensions, using a combination of analytical methods and Monte-Carlo techniques. The normal state is found to display various metal to insulators transitions as a function of doping and interaction strength. We derive self-consistent equations for the local Green's functions in the presence of superconducting long-range order, and extend previous algorithms to this case. We present direct numerical evidence that in a specific range of parameter space, the normal state is unstable against a superconducting state characterized by a strongly frequency dependent order-parameter.
Keywords
Cite
@article{arxiv.cond-mat/9304018,
title = {Superconductivity in the Two-Band Hubbard Model in Infinite Dimensions},
author = {Antoine Georges and Gabriel Kotliar and Werner Krauth},
journal= {arXiv preprint arXiv:cond-mat/9304018},
year = {2009}
}
Comments
12 pages (14 figures not included, available upon request), Latex, LPTENS Preprint 93/10