fqe.fqe_decorators.process_rank2_matrix

Look at the structure of the (1, 0) component of the one body matrix and

determine the symmetries.

mat (numpy.ndarray) - input matrix to be processed

norb (int) - the number of orbitals in the system

e_0 (copmlex) - scalar part of the Hamiltonian

(Hamiltonian) - resulting Hamiltonian