- #1
matematikuvol
- 192
- 0
Why is minus sine in definition of hamiltonian
[tex]H=-\sum_{i,j}J_{i,j}(S_{i}^+S_{j}^-+S_i^zS_j^z)[/tex]
Why not?
[tex]H=\sum_{i,j}J_{i,j}(S_{i}^+S_{j}^-+S_i^zS_j^z)[/tex]
[tex]H=-\sum_{i,j}J_{i,j}(S_{i}^+S_{j}^-+S_i^zS_j^z)[/tex]
Why not?
[tex]H=\sum_{i,j}J_{i,j}(S_{i}^+S_{j}^-+S_i^zS_j^z)[/tex]