Transmission of two interacting electrons

The transmission of two electrons through a region where they interact is f ound to be enhanced by a renormalization of the repulsive interaction. For a specific example of the single-particle Hamiltonian which includes a stro ngly attractive potential, the renormalized interaction becomes attractive, and the transmission has a pronounced maximum as a function of the depth o f the single-electron attractive potential. The results apply directly to a simple model of scattering of two interacting electrons by a quantum dot.