Production of fermions in models of string cosmology

Abstract

Production of spin 1/2 fermions and gravitinos by the standard mechanism of amplification of quantum fluctuations during the dilaton-driven inflation phase in models of string cosmology is highly suppressed. Constraints on string cosmology models from gravitational production of gravitinos, contrary to expectations, are similar to constraints on other models.

12 pages, no figures, additional clarifications and typos corrected

References in corpus (7)

• Superstring Cosmology
• Gravitino Production After Inflation
• Thermal and Non-Thermal Production of Gravitinos in the Early Universe
• Production of spin 3/2 particles from vacuum fluctuations
• Cosmic Microwave Background anisotropies and extra dimensions in String Cosmology
• Late-time creation of gravitinos from the vacuum
• Gravitational production of gravitinos

Cited by in corpus (5)

• The Pre-Big Bang Scenario in String Cosmology
• Reheating and dangerous relics in pre-big bang string cosmology
• Spin 1/2 field and regularization in de Sitter and radiation dominated universe
• Massive fermion production in nonsingular superstring cosmology
• Particle creation by a massless spin-$\frac{1}{2}$ field in a warped cosmological braneworld scenario