Quantum spin dynamics of the transverse Ising model in two dimensions

摘要: The authors use the method of recurrence relations to obtain time-dependent spin correlation function Ising model in a transverse field 2D. They find that decays algebraically at long times as t{sup {minus}{alpha}}, where {alpha} {le} 2.2. This is be contrasted with 1D case decay Gaussian. expect 3D dynamical will also exhibit power law decay. Their results can used understand experimental shape functions for induced moment LiTb{sub p}Y{sub 1{minus}p}F{sub 4}. 10 refs., 3 figs.