  We carried out two-dimensional high-resolution simulations to study the
effect of dust feedback on the evolution of vortices induced by massive planets
in protoplanetary disks. Various initial dust to gas disk surface density
ratios ($0.001$ -- $0.01$) and dust particle sizes (Stokes number
$4\times10^{-4}$ -- $0.16$) are considered. We found that while dust particles
migrate inwards, vortices are very effective in collecting them. When dust
density becomes comparable to gas density within the vortex, a dynamical
instability is excited and it alters the coherent vorticity pattern and
destroys the vortex. This dust feedback effect is stronger with higher initial
dust/gas density ratio and larger dust grain. Consequently, we found that the
disk vortex lifetime can be reduced up to a factor of 10. We discuss the
implications of our findings on the survivability of vortices in protoplanetary
disks and planet formation.
