The multipartite nonlocality of finite and infinite transverse‐field Ising model is investigated. For the finite chain, the exact diagonalization method is used to study the multipartite nonlocality at zero and finite temperatures. It is found that the logarithm of nonlocality S presents the linear ...
We have studied the behavior of the energy gap of the 1D AF spin-1/2 XXZ model in a transverse magnetic field (h) using the exact diagonalization technique. The ground state phase diagram consists of two spin-flop and paramagnetic phases. Using a modified finite-size scaling approach, we ...
We study the effect of quantum fluctuations by means of a transverse magnetic field (Γ) on the antiferromagnetic J 1-J 2 Ising model on the checkerboard lattice, the two dimensional version of the pyrochlore lattice. The zero-temperature phase diagram of the model has been obtained by employin...
The one-dimensional Ising model with a transverse field. Ann. Phys. 57, 79–90 (1970). 18. Collan, H. K., Krusius, M. & Pickett, G. R. Suppression of the nuclear heat capacity in bismuth metal by very slow spin-lattice relaxation, and a new value for the electronic specific heat...
Quantum dynamics of an Ising spin-chain in a random transverse field.pdf,a r X i v : c o n d - m a t / 0 6 0 7 7 0 3 v 3 [ c o n d - m a t .s t r - e l ] 1 4 S e p 2 0 0 6 Quantum dynamics of an Ising spin-chain in a random transverse field Xun...
Quasi-one-dimensional anisotropic Heisenberg model in a transverse magnetic field 文档格式: .pdf 文档大小: 140.56K 文档页数: 4页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 待分类 文档标签: Quasi-one-dimensionalanisotropicHeisenbergmodelinatransversemagneticfield ...
We derive closed-form expressions for this energy gap between the different parity subspaces and analyze its behavior and dependence on the system size in the various regimes of the applied field. Finally, we suggest an expression for the correlation length of such a model that is consistent ...
We study the effect of quantum fluctuations by means of a transverse magnetic field ( 螕 ) on the antiferromagnetic J 1 - J 2 Ising model on the checkerboard lattice, the two dimensional version of the pyrochlore lattice. The zero-temperature phase diagram of the model has been obtained by ...
The model consists of Pauli spins arranged on a simple square or cubic lattice, experiencing nearest-neighbor interactions through their x components and subjectto a transverse field in the z direction of strength u03bb. Working at zero temperature, full optimization of a Hartree-Jastrowtrial wave...
energy gapIsing modelmagnetic transitionsspin systems/ saturation transverse fieldenergy gap1D antiferromagnetic spin-1/2 XXZ modelexact diagonalization techniqueground state phase diagramWe have studied the behavior of the energy gap of the 1D AF spin-1/2 XXZ model in a transverse magnetic field (...