%0 Journal Article
%T Thermal production of gravitinos
%A Rychkov
%A Vyacheslav S.
%A Strumia
%A Alessandro
%J High Energy Physics - Phenomenology
%D 2007
%I 
%R 10.1103/PhysRevD.75.075011
%X We reconsider thermal production of gravitinos in the early universe, adding to previously considered 2 -> 2 gauge scatterings: a) production via 1 -> 2 decays, allowed by thermal masses; b) the effect of the top Yukawa coupling; c) a proper treatment of the reheating process. Our final result behaves physically (larger couplings give a larger rate) and is twice larger than previous results, implying e.g. a twice stronger constraint on the reheating temperature. Accessory results about (supersymmetric) theories at finite temperature and gravitino couplings might have some interest.
%U http://arxiv.org/abs/hep-ph/0701104