  We employ an exact solution of the simplest model for pump-probe
time-resolved photoemission spectroscopy in charge-density-wave systems to show
how, in nonequilibrium the gap in the density of states disappears while the
charge density remains modulated, and then the gap reforms after the pulse has
passed. This nonequilibrium scenario qualitatively describes the common
short-time experimental features in TaS2 and TbTe3 indicating a
quasiuniversality for nonequilibrium "melting" with qualitative features that
can be easily understood within a simple picture.
