Hi, all
The site operators for spin are defined as S+, S- and Sz in ALPS, in order to express Sy, we need to introduce "i".
Now I have a spin Hamiltonian, if I express it in terms of S+, S- and Sz, there will be "i" terms in the Hamiltonian. In such case, how do I specify each term or parameters?
Thanks, GANG CHEN