quantax.operator.Heisenberg

quantax.operator.Heisenberg(J: Number | Sequence[Number] = 1.0, n_neighbor: int | Sequence[int] = 1, msr: bool = False) → Operator

Heisenberg Hamiltonian \(H = \sum_n J_n \sum_{\left< ij \right>_n} \boldsymbol{\sigma}_i \cdot \boldsymbol{\sigma}_j\)