Inelastic effects on resonant tunnelling in a double- delta -function potential

Inelastic effects on resonant tunnelling are considered for a model consisting of a double- delta -function potential with the region in between oscillating with amplitude V1 and frequency omega . In the limit of small V1/ omega , the authors obtain analytic expressions for the transmission coefficient for the elastic and the two nearest inelastic channels. Numerically, they obtain a set of resonant sidebands around the static resonances with magnitudes proportional to (V1/ omega )2 for both symmetric and asymmetric delta functions. The authors discuss the conditions under which the sidebands of contiguous static resonances can superpose, producing an increase in the probabilities of both elastic and inelastic events. They also describe the feedback mechanism between the scattering of elastic and inelastic events, which modifies the probabilities of elastic events.