The antiferromagnetic cross-coupled spin ladder: Quantum fidelity and tensor networks approach
The antiferromagnetic cross-coupled spin ladder: Quantum fidelity and tensor networks approach
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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
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发表时间:
2015-08
影响因子:
0.6
通讯作者:
Batchelor Murray T
中科院分区:
文献类型:
--
作者:
Chen Xi Hao;Cho Sam Young;Zhou Huan Qiang;Batchelor Murray T
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.
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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
影响因子:
3
作者:
Orus, Roman
通讯作者:
Orus, Roman
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
影响因子:
3.7
作者:
T. Hakobyan;J. Hetherington;M. Roger
通讯作者:
T. Hakobyan;J. Hetherington;M. Roger
影响因子:
3.7
作者:
Kim, EH;Fáth, G;Scalapino, DJ
通讯作者:
Scalapino, DJ