On the graceful exit problem in warm inflation
  A seemingly simple question, how does warm inflation exit gracefully?, has a
more complex answer than in a cold paradigm. It has been highlighted here that
whether warm inflation exits gracefully depends on three independent choices:
The form of the potential, the choice of the warm inflation model (i.e., on the
form of its dissipative coefficient) and the regime, of weak or strong
dissipation, characterizing the warm inflation dynamics. Generic conditions on
slow-roll parameters and several constraints on the different model parameters
required for warm inflation to exit gracefully are derived.
