Gravitino Production After Inflation

  title={Gravitino Production After Inflation},
  author={Renata Kallosh and Lev Kofman and Andrei D. Linde and Antoine Van Proeyen},
We investigate the production of gravitinos in a cosmological background. Gravitinos can be produced during preheating after inflation due to a combined effect of interactions with an oscillating inflaton field and absence of conformal invariance. In order to get insight on conformal properties of gravitino we reformulate phenomenological supergravity in SU(2, 2|1)-symmetric way. The Planck mass and Fand D-terms appear via the gauge-fixed value of a superfield that we call conformon. We find… CONTINUE READING
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