Function commutator_kernel 

pub fn commutator_kernel(
    a: &Operator,
    b: &Operator,
) -> Result<HilbertState, PhysicsError>

Calculates commutator $[A, B] = AB - BA$.

Arguments

• a - Operator $A$ (HilbertState/QuantumOperator).
• b - Operator $B$.

Returns

• Result<HilbertState, PhysicsError> - Commutator result.