  Dislocation climb mobilities, assuming vacancy bulk diffusion, are derived
and implemented in dislocation dynamics simulations to study the coarsening of
vacancy prismatic loops in fcc metals. When loops cannot glide, the comparison
of the simulations with a coarsening model based on the line tension
approximation shows a good agreement. Dislocation dynamics simulations with
both glide and climb are then performed. Allowing for glide of the loops along
their prismatic cylinders leads to faster coarsening kinetics, as direct
coalescence of the loops is now possible.
