光晶格中超冷费米子中由束缚势驱动的临界行为
强关联电子
2015-05-13 v1
摘要
最近的一篇论文[V. L. Campo 等, Phys. Rev. Lett. 99, 240403 (2007)]提出了一种双参数标度方法,用于从光晶格实验确定费米子哈伯德模型的相图。受此提议的启发,我们更详细地研究了在一维情况下,每个格点的基态能量作为阱尺寸(L)和束缚势(V(x) = t(x/L)^alpha)的函数的行为。使用BALDA-DFT方法,我们发现了当alpha趋于无穷大时的临界行为特征。
引用
@article{arxiv.0809.2186,
title = {Critical behavior driven by the confining potential in optical lattices with ultra-cold fermions?},
author = {V. L. Campo and J. Quintanilla and C. Hooley},
journal= {arXiv preprint arXiv:0809.2186},
year = {2015}
}
备注
4 pages, 4 Postscript figures, uses elsart5p.cls, elsart.cls, submitted as proceeding to SCES-08 (Strongly Correlated Electron Systems Meeting of 2008)