Puts a two-body fermion operator in chemist ordering.
openfermion.transforms.chemist_ordered(
fermion_operator
)
The normal ordering convention for chemists is different.
Rather than ordering the two-body term as physicists do, as
\(a^\dagger a^\dagger a a\)
the chemist ordering of the two-body term is
\(a^\dagger a a^\dagger a\)
Args |
|---|
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fermion_operator (FermionOperator): a fermion operator guarenteed to
have number conserving one- and two-body fermion terms only.
|
Returns |
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chemist_ordered_operator (FermionOperator): the input operator
ordered in the chemistry convention.
|
Raises |
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OperatorSpecificationError
|
Operator is not two-body number conserving.
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View source on GitHub