The antiferromagnetic cross-coupled spin ladder: Quantum fidelity and tensor networks approach

The antiferromagnetic cross-coupled spin ladder: Quantum fidelity and tensor networks approach
复制标题

反铁磁交叉耦合自旋梯:量子保真度和张量网络方法

DOI:
10.3938/jkps.68.1114
复制
发表时间:
2015-08
影响因子:
0.6
通讯作者:
Batchelor Murray T
Batchelor Murray T
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Chen Xi Hao;Cho Sam Young;Zhou Huan Qiang;Batchelor Murray T

文献摘要

参考文献

相似文献

研究了具有反铁磁耦合的交叉耦合海森堡自旋阶梯的相图。在该模型中,基于弱耦合场理论重整化群参数所预测的柱状二聚体相存在的结果是相互矛盾的。该模型的数值工作基于各种方法,包括精确对角化、级数展开和密度矩阵重整化群计算。利用最近发展的张量网络态和量子自旋阶梯的基态保真度方法,我们没有发现柱状二聚体相存在的证据。我们还提供了一个基于哈密顿量对称性的论证,该论证表明反铁磁耦合的相图由一条将横单线态和霍尔丹相分开的单线组成。
We investigate the phase diagram of the cross-coupled Heisenberg spin ladder with antiferromagnetic couplings. For this model, the results for the existence of the columnar dimer phase, which was predicted on the basis of weak coupling field theory renormalization group arguments, have been conflicting. The numerical work on this model has been based on various approaches, including exact diagonalization, series expansions and density-matrix renormalization group calculations. Using the recently-developed tensor network states and groundstate fidelity approach for quantum spin ladders, we find no evidence for the existence of the columnar dimer phase. We also provide an argument based on the symmetry of the Hamiltonian, which suggests that the phase diagram for antiferromagnetic couplings consists of a single line separating the rung-singlet and the Haldane phases.
DOI: 10.1103/physrevb.52.12485
发表时间: 1995-01
期刊: Physical review. B, Condensed matter
影响因子: --
作者:
Xian
通讯作者: Xian
DOI: 10.1016/j.aop.2014.06.013
发表时间: 2014-10-01
期刊: ANNALS OF PHYSICS
影响因子: 3
作者:
Orus, Roman
通讯作者: Orus, Roman
DOI: 10.1103/physrevb.77.214418
发表时间: 2008-06
期刊: Physical Review B
影响因子: 3.7
作者:
Guang-Hua Liu;Hai-Long Wang;G. Tian
通讯作者: Guang-Hua Liu;Hai-Long Wang;G. Tian
DOI: 10.1103/physrevb.63.144433
发表时间: 2000-11
期刊: Physical Review B
影响因子: 3.7
作者:
T. Hakobyan;J. Hetherington;M. Roger
通讯作者: T. Hakobyan;J. Hetherington;M. Roger
DOI: 10.1103/physrevb.62.14965
发表时间: 2000-12-01
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
Kim, EH;Fáth, G;Scalapino, DJ
通讯作者: Scalapino, DJ