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Gravitino production during preheating

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López Maroto, Antonio (2000) Gravitino production during preheating. Nuclear Physics B-Proceedings Supplements, 81 . pp. 351-355. ISSN 0920-5632

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Official URL: http://dx.doi.org/10.1016/S0920-5632(99)00896-8




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 ±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.


Item Type:Article
Additional Information:

International Workshop on Particles in Astrophysics and Cosmology (1999. Valencia). © 2014 Elsevier B.V. I thank A. Mazumdar for useful discussions. This work has been supported by SEUID-Royal Society and CICYT-AEN97-1693 (Spain).

Uncontrolled Keywords:Big-bang nucleosynthesis, Inflation, Fermions, Supersymmetry, Supergravity, Universe, Physics
Subjects:Sciences > Physics
ID Code:27337
Deposited On:13 Nov 2014 09:20
Last Modified:20 Nov 2014 09:41

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