We calculate the intensity of photon emission from a trion in a single quantum dot, as a function of energy and gate voltage, using the impurity Anderson model and variational wave functions. Assuming a flat density of conduction states and constant hybridization energy, the results agree with the main features observed in recent experiments: non-monotonic dependence of the energy on gate voltage, non-Lorentzian line shapes, and a line width that increases near the regions of instability of the single electron final state to occupations zero or two.
@article{arxiv.0908.4114,
title = {Photoluminiscence of a quantum dot hybridized with a continuum},
author = {L. M. Leon Hilario and A. A. Aligia},
journal= {arXiv preprint arXiv:0908.4114},
year = {2009}
}