Lebedev A V, Lesovik G B, Blatter G
Theoretische Physik, Schafmattstrasse 32, ETH-Zurich, CH-8093 Zürich, Switzerland.
Phys Rev Lett. 2008 Jun 6;100(22):226805. doi: 10.1103/PhysRevLett.100.226805.
We present a nonperturbative expression for the scattering matrix of N particles interacting inside a quantum dot. Characterizing the dot by its resonances, we find a compact form for the scattering matrix in a real-time representation. We study the transmission probabilities and interaction-induced orbital entanglement of two electrons incident on the dot in a spin-singlet state.