RT Journal Article
T1 Gravitino production during preheating
A1 López Maroto, Antonio
AB 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.
PB Elsevier Science Bv
SN 0920-5632
YR 2000
FD 2000
LK https://hdl.handle.net/20.500.14352/59331
UL https://hdl.handle.net/20.500.14352/59331
LA eng
NO 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).
NO SEUID-Royal Society (Spain)
NO CICYT (Spain)
DS Docta Complutense
RD 9 abr 2025