fqe.hamiltonians.hamiltonian_utils.nbody_matrix

Parse the creation and annihilation operators and return a sparse matrix

fqe.hamiltonians.hamiltonian_utils.nbody_matrix(
    ops: "FermionOperator",
    norb: int
) -> np.ndarray

with the elements of the matrix filled with the convention

.. code-block::

    i^j^k^    o p q
    1 2 3 ... 1 2 3 ...

ops Matrix in the FermionOperator format.
norb The number of orbitals in the system.