Warm inflation in the presence of magnetic fields
  We study the effects of primordial magnetic fields on the inflationary
potential in the context of a warm inflation scenario. The model, based on
global supersymmetry with a new-inflation-type potential and a coupling between
the inflaton and a heavy intermediate superfield, is already known to preserve
the flatness required for slow-roll conditions even after including thermal
contributions. Here we show that the magnetic field makes the potential even
flatter, retarding the transition and rendering it smoother.
