  The optical properties of quantum dots embedded in a catalytically grown
semiconductor nanowire are studied theoretically. In comparison to dots in a
bulk environment, the excitonic absorption is strongly modified by the
one-dimensional character of the nanowire phonon spectrum. In addition to
pronounced satellite peaks due to phonon-assisted absorption, we find a finite
width of the zero-phonon line already in the lowest-order calculation.

Mesoscale and Nanoscale Physics