<正> We study the symmetries of a(2+1)-dimensional generalized Broer-Kaup system by means of the classicalLie group theory.The corresponding group algebra is co
<正> For Bose-Einstein condensation of neutral atoms in anisotropic traps at zero temperature,we presentsimple analytical methods for computing the properties o
【正】 We calculate the concurrence of all pairwise entanglement of Heisenberg XX open chain with single systemimpurity in three-qubit and four-qubit cases,and
<正> The exchange bias(EB)of the ferromagnetic(FM)/antiferromagnetic(AFM)bilayers in a compensated caseis studied by use of the many-body Green's function m
<正> We obtain soliton and plane wave solutions for the coupled nonlinear Schr?dinger equations,which describethe dynamics of the three-component Bose-Einstein