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fqe.hamiltonians.hamiltonian_utils.nbody_matrix

Parse the creation and annihilation operators and return a sparse matrix

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.