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arXiv · hep-ph/9906388

Gravitino production during preheating

Antonio L. Maroto
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Abstract

We study the production of gravitinos during the preheating era after inflation by means of the non-perturbative Bogolyubov technique. Considering only the helicity $\pm 3/2$ states, the problem is reduced to the simpler Dirac fermions case. We calculate the production in a particular supergravity model in an expanding universe and obtain the spectrum and number density. Finally we compare the results with the nucleosynthesis bounds and extract some consequences.

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Antonio L. Maroto. 1999-06-16. Gravitino production during preheating. https://doi.org/10.1016/s0920-5632(99)00896-8

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