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These are bonuses which come directly from the observa- tions of the initial density perturbations from WMAP data [11]. The fact that the inflaton is lighter than the gravitino may have interesting low-energy phenomenological impli- cations. Furthermore in this simple model it is easy to obtain sufficient number of efoldings with moderate values of the η parameter. 

To explore our proposal in more detail, it is important to construct an explicit model, even if not very realistic, in order to understand in more detail the end of inflation, the reheating mechanisms, and also the fine structure of the inflaton potential. We hope to report on this in the near future [25]. 

## Acknowledgements 

We would like to thank G. Dvali, G. Giudice, J. Les- gourgues, S. Matarrese, G. Ross, Nathan Seiberg, M.A. V´ azquez Mozo, and L. Verde for useful discussion. C.G. and R.J. would like to thank the CERN Theory Group for hospitality while part of this work was done. 

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