Non-thermal leptogenesis and gravitino problem in inflaton decay

Abstract

In the present work we discuss baryon asymmetry in the non-thermal leptogenesis scenario and gravitino cosmology for an unstable gravitino with inflaton decay. We take into account two production mechanisms for gravitino, namely thermal production and inflaton decay. We wish to show in plots the allowed parameter space so that the BBN constraint and the requirement for the right baryon asymmetry are satisfied at the same time. However our analysis shows that it is impossible to achieve both goals simultaneously.

11 pages, 1 figure

References in corpus (8)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
• Thermal Gravitino Production and Collider Tests of Leptogenesis
• Thermal production of gravitinos
• Gravitino Production from Heavy Moduli Decay and Cosmological Moduli Problem Revived
• Gravitino Overproduction in Inflaton Decay
• The Gravitino-Overproduction Problem in Inflationary Universe
• Inflaton Decay through Supergravity Effects

Cited by in corpus (2)

• Reheating in small-field inflation on the brane: The Swampland Criteria and observational constraints in light of the PLANCK 2018 results
• Non-thermal leptogenesis with distinct CP violation and minimal dark matter