Magnopy¶
Spin Hamiltonian¶
\[\begin{split}\mathcal{H}
=
\sum_{n=1}^{n=4}
C_n
\sum_{\substack{\mu_1,...,\mu_n,\\i_1,...,i_n}}
J_{\mu_1,...,\mu_n}^{i_1,...,i_n}
\prod_{m=1}^{n}
S_{\mu_m}^{i_m}\end{split}\]
where real constants \(C_n\) are arbitrary and used to support any convention.
Convention¶
Spin normalized |
any |
Multiple counting |
any |