qiskit.chemistry.transformations.FermionicTransformation.build_hopping_operators

FermionicTransformation.build_hopping_operators(excitations='sd')

Builds the product of raising and lowering operators (basic excitation operators)

Parameters

excitations (Union[str, List[List[int]]]) – The excitations to be included in the eom pseudo-eigenvalue problem. If a string (‘s’, ‘d’ or ‘sd’) then all excitations of the given type will be used. Otherwise a list of custom excitations can directly be provided.

Return type

Tuple[Dict[str, WeightedPauliOperator], Dict[str, List[bool]], Dict[str, List[Any]]]

Returns

A tuple containing the hopping operators, the types of commutativities and the excitation indices.