Radiative corrections to scalar masses in de Sitter space
  We compute the radiative corrections to the mass of a test boson field in an inflating space-time. The calculations are carried out in case of a boson part of a supersymmetric chiral multiplet. We show that its mass is preserved up to logarithmic divergences both in ultraviolet and infrared domains. Consequences of these results for inflationary models are discussed. 
T. Brunier, F. Bernardeau, J.-P. Uzan