DestroyDestroy

DestroyDestroy(integer i, integer j) -> OperatorFermiNamed

Returns the pairing term $f_{i}f_{j}$ with support on the specified sites.

Parameters

• i: The first site index on the left.
• j: The second site index on the right.

Example

DestroyDestroy(0,3)*Fbit("1001") // Returns (-1 + 0i)|0000>