Hidden XY structure of the bond-charge Hubbard model

Hidden XY structure of the bond-charge Hubbard model
复制标题

键电荷哈伯德模型的隐藏 XY 结构

DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
A. Montorsi
A. Montorsi
中科院分区：
--
文献类型：
--
作者：
M. Roncaglia;C. Boschi;A. Montorsi

文献摘要

被引文献

相似文献

CNR-IMM，Sezione di Bologna，via Gobetti 101，I-40129 Bologna，意大利（Dated：October 4，2010）在超导区域中具有键-电荷相互作用（HBC）的排斥一维Hubbard模型映射到具有横向场的自旋1/2 XY模型。我们计算关联和相边界，实现了良好的协议与数值结果。超导转变的临界线与XY模型中确定超导体-无公度转变的解析因式分解线相吻合。
CNR-IMM, Sezione di Bologna, via Gobetti 101, I-40129 Bologna, Italy(Dated: October 4, 2010)The repulsive one-dimensional Hubbard model with bond-charge interaction (HBC) in the su-perconducting regime is mapped onto the spin-1/2 XY model with transverse field. We calculatecorrelations and phase boundaries, realizing an excellent agreement with numerical results. Thecritical line for the superconducting transition is shown to coincide with the analytical factorizationline identifying the commensurate-incommensurate transition in the XY model.