J. Talamantes et al., The delocalization problem of two interacting electrons in a two-dimensional random potential, PHYS ST S-B, 218(1), 2000, pp. 119-123
The problem of two electrons in a two-dimensional random potential is addre
ssed numerically. Specifically, the role of the Coulomb interaction between
electrons on localization is investigated by writing the Hamiltonian on a
localized basis and diagonalizing it exactly. The result of that procedure
is discussed in terms of level statistics, and the expectation value of the
electron-electron separation.