超流体到绝缘体转变附近的临界电容与电荷 - 涡旋对偶性
强关联电子
2015-01-07 v2 量子气体
超导电性
摘要
利用二维空间中复频率下电荷电导率与涡旋电导率之间的广义互易关系，我们将绝缘相中的电容识别为涡旋凝聚体刚度的度量。我们计算出相对论性 O(2) 模型在镜像点处的玻色子超流刚度与涡旋凝聚体刚度之比为 0.21(1)。镜像点处动力学电导率的乘积被用作检验电荷 - 涡旋对偶性的测试。我们提出有限波矢量压缩率作为中性晶格玻色子涡旋凝聚体刚度的实验测量量。
引用
@article{arxiv.1407.1055,
title = {Critical capacitance and charge-vortex duality near the superfluid to insulator transition},
author = {Snir Gazit and Daniel Podolsky and Assa Auerbach},
journal= {arXiv preprint arXiv:1407.1055},
year = {2015}
}
备注
10 pages, 10 figures, published version, improved discussion on the charge vortex duality in the introduction, added a supplementary material section on finite size scaling analysis of the critical energy scales, added to the supplementary material a comparison with other methods for analyzing the high frequency correction to scaling