Radiative corrections to scalar masses in de Sitter space
Brunier T. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France) Bernardeau F. (CEA, DSM, SPhT (Service de Physique Théorique), F-91191 Gif-sur-Yvette, FRANCE) Uzan J.-P. (Laboratoire de Physique Théorique (LPT), CNRS, UMR 8627, Université de Paris-Sud XI, F-91405 Orsay, France)
Abstract: 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.