Fermionic concurrence in the extended Hubbard dimer
Quantum Physics
2009-11-10 v1 Strongly Correlated Electrons
Abstract
In this paper, we introduce and study the fermionic concurrence in a two-site extended Hubbard model. Its behaviors both at the ground state and finite temperatures as function of Coulomb interaction (on-site) and (nearest-neighbor) are obtained analytically and numerically. We also investigate the change of the concurrence under a nonuniform field, including local potential and magnetic field, and find that the concurrence can be modulated by these fields.
Cite
@article{arxiv.quant-ph/0406078,
title = {Fermionic concurrence in the extended Hubbard dimer},
author = {Shu-Sa Deng and Shi-Jian Gu and Hai-Qing Lin},
journal= {arXiv preprint arXiv:quant-ph/0406078},
year = {2009}
}
Comments
5 pages, 7 figures