Treatment of molecular resonances using the bi‐orthogonal dilated electron propagator with application to the 2 II g shape resonance in e –N 2 scattering

Preliminary results from the first application of the bi‐orthogonal dilated electron propagator to the treatment of molecular resonances are presented for the energy and the width of the 2 II g shape resonance in e –N 2 scattering. The corresponding resonant Feynman–Dyson amplitudes ( FDAS ) are plotted to get a quantitative affirmation of the topology of the lowest unoccupied molecular orbital ( LUMO ) for N 2 . It is shown that a plot of the resonant FDAS offer new insights into the role of correlation in the formation and decay of molecular shape resonances. © 1994 John Wiley & Sons, Inc.