Entanglement properties of a two-qubit, mixed-spin, Heisenberg chain under a nonuniform magnetic field

2008 ◽  
Vol 78 (2) ◽  
pp. 025703 ◽  
Author(s):  
Guo-Hui Yang ◽  
Ling Zhou
Keyword(s):  
Magnetic Field ◽  
Nonuniform Magnetic Field ◽  
Heisenberg Chain ◽  
Mixed Spin

scholarly journals Effective Hamiltonian for a half-filled asymmetric ionic Hubbard chain with alternating on-site interaction

2016 ◽  
Vol 30 (03) ◽  
pp. 1550260 ◽  
Author(s):  
I. Grusha ◽  
M. Menteshashvili ◽  
G. I. Japaridze
Keyword(s):  
Magnetic Field ◽  
Nearest Neighbor ◽  
Effective Hamiltonian ◽  
Heisenberg Chain ◽  
Spin Hamiltonian ◽  
Effective Spin ◽  
One Dimensional ◽  
The One ◽  
Strong Repulsion ◽  
Ionic Hubbard Model

We derive an effective spin Hamiltonian for the one-dimensional half-filled asymmetric ionic Hubbard model (IHM) with alternating on-site interaction in the limit of strong repulsion. It is shown that the effective Hamiltonian is that of a spin S = 1/2 anisotropic XXZ Heisenberg chain with alternating next-nearest-neighbor (NNN) and three-spin couplings in the presence of a uniform and a staggered magnetic field.

scholarly journals Thermoconvective instability of paramagnetic fluids in a nonuniform magnetic field

1998 ◽  
Vol 57 (5) ◽  
pp. 5564-5571 ◽  
Author(s):  
Jie Huang ◽  
Donald D. Gray ◽  
Boyd F. Edwards
Keyword(s):  
Magnetic Field ◽  
Nonuniform Magnetic Field ◽  
Thermoconvective Instability
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