一维偶极气体中的自发Peierls二聚化与涌现键序
量子气体
2014-12-09 v3 强关联电子
摘要
我们研究了偶极相互作用在一维系统中的效应，并联系了在囚禁原子和分子偶极气体中观察奇异多体效应的可能性。通过结合解析和数值方法，我们展示了短程和长程相互作用之间的竞争如何产生阻挫效应，从而导致自发二聚化相的出现，其特征是键序。这种真正的量子序与Mott相和自旋密度波相截然不同，并且可以通过原位成像技术测量非局域序参量来明确探测。
引用
@article{arxiv.1304.5200,
title = {Spontaneous Peierls dimerization and emergent bond order in one-dimensional dipolar gases},
author = {M. Di Dio and L. Barbiero and A. Recati and M. Dalmonte},
journal= {arXiv preprint arXiv:1304.5200},
year = {2014}
}
备注
8 pages, 6 figures; version as published: Text added to improve readability; added extensive numerical data to support results already present in v1; section on the dipolar two-leg ladder removed for clarity; new plots and references added. Accepted for publication in Phys. Rev. A