  We explore the experimental implications of a recent theory of the quantum
dynamics of vortices in superfluids proximate to Mott insulators
(cond-mat/0408329 and cond-mat/0409470). The theory predicts modulations in the
local density of states in the regions over which the vortices execute their
quantum zero point motion. We use the spatial extent of such modulations in
scanning tunnelling microscopy measurements (Hoffman et al., cond-mat/0201348)
on the vortex lattice of BSCCO to estimate the inertial mass of a point vortex.
We discuss other, more direct, experimental signatures of the vortex dynamics.
