openfermion.hamiltonians.sz_operator

Return the sz operator.

Main aliases

openfermion.hamiltonians.sz_operator(
    n_spatial_orbitals: int
) -> openfermion.ops.FermionOperator

\[ \begin{align} S^{z} = \frac{1}{2}\sum_{i = 1}^{n}(n_{i, \alpha} - n_{i, \beta}) \end{align} \]

Args
`n_spatial_orbitals`	number of spatial orbitals (n_qubits // 2).

Returns
operator (FermionOperator): corresponding to the sz operator over n_spatial_orbitals.

Note
The indexing convention used is that even indices correspond to spin-up (alpha) modes and odd indices correspond to spin-down (beta) modes.

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Last updated 2022-08-07 UTC.

Args