<正> In the paper,we consider the transport of a two-dimensional random walk.The velocity and the dispersionof this two-dimensional random walk are derived.It m
<正> The transverse spin-2 Ising ferromagnetic model with a longitudinal crystal field is studied within themean-field theory.The phase diagrams and magnetizati
<正> In this paper,by using the symmetry method,the relationships between new explicit solutions and oldones of the(2+1)-dimensional Kaup-Kupershmidt(KK)equatio
<正> We find that a kind of atomic coherent state,formed as exp[ζJ_+-ζ~*J_-] |00〉,when the SU(2) generatorsJ± are taken as Fan's form,J_+=(1/2)(a_1-