Thermal Effects on Pure and Hybrid Inflation
  This paper discusses models of inflation based on global supersymmetry. It is shown that there are parameter ranges, consisent with observational constraints, for which warm inflation occurs and supergravity effects can be neglected. There is no need for any fine tuning of parameters. The thermal corrections to the inflaton potential are calculated and found to be unimportant. 
Lisa M H Hall and Ian G Moss