Browsing: State

We rewrite the term of the Hamiltonian (1) \({{{\mathscr {H}}}}_{K}\) in detail in the following form$$\begin{aligned}{} & {} {{{\mathscr {H}}}}_K= \sum _{j=1}^N[2J s^z_jS^z_j+K(s^+_jS^-_j + s^-_jS^+_j)], \end{aligned}$$…