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Constraining the primordial spectrum of metric perturbations from gravitino and moduli production



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López Maroto, Antonio (2002) Constraining the primordial spectrum of metric perturbations from gravitino and moduli production. Physical Review D, 65 (8). ISSN 0556-2821


Official URL: http://dx.doi.org/10.1103/PhysRevD.65.083508



We consider the production of gravitinos and moduli fields from quantum vacuum fluctuations induced by the presence of scalar metric perturbations at the end of inflation. We obtain the corresponding occupation numbers, up to first order in perturbation theory, in terms of the power spectrum of the metric perturbations. We compute the limits imposed by nucleosynthesis on the spectral index n(s) for different models with constant n(s). The results show that, in certain cases, such limits can be as strong as n(s)<1.12, which is more stringent than those coming from primordial black hole production.

Item Type:Article
Additional Information:

© 2002 The American Physical Society. I am grateful to A. Linde and L. Kofman for useful comments. This work has been partially supported by the CICYT (Spain) projects AEN97-1693 and FPA2000-0956. The author also acknowledges financial support from the Universidad Complutense del Amo program.

Uncontrolled Keywords:Big-bang nucleosynthesis, Inhomogeneous cosmologies, Hybrid inflation, Particles, Fermions, Field, Supersymmetry, Fluctuations, Supergravity, Universe
Subjects:Sciences > Physics
ID Code:27293
Deposited On:13 Nov 2014 09:00
Last Modified:13 Nov 2014 09:00

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