  We present results from molecular dynamics simulations exploring the
supercooled dynamics of the Gaussian Core Model in the low- and
intermediate-density regimes. In particular, we discuss the transition from the
low-density hard-sphere-like glassy dynamics to the high-density one. The
dynamics at low densities is well described by the caging mechanism, giving
rise to intermittent dynamics. At high densities, the particles undergo a more
continuous motion in which the concept of cage loses its meaning. We elaborate
on the idea that these different supercooled dynamics are in fact the
precursors of two different glass states.
