  Two-particle like-sign and unlike-sign correlations including Coulomb final
state interactions are calculated for Gaussian wave packets emitted from a
Gaussian source. We show that the width of the wave packets can be fully
absorbed into the spatial and momentum space widths of an effective emission
function for plane wave states, and that Coulomb final state interaction
effects are sensitive only to the latter, but not to the wave packet width
itself. Results from analytical and numerical calculations are compared with
recently published work by other authors.
