The gravitino problem in supersymmetric warm inflation

Abstract

The warm inflation paradigm considers the continuous production of radiation during inflation due to dissipative effects. In its strong dissipation limit, warm inflation gives way to a radiation dominated Universe. High scale inflation then yields a high reheating temperature, which then poses a severe gravitino overproduction problem for the supersymmetric realisations of warm inflation. In this paper we show that in certain class of supersymmetric models the dissipative dynamics of the inflaton is such that the field can avoid its complete decay after inflation. In some cases, the residual energy density stored in the field oscillations may come to dominate over the radiation bath at a later epoch. If the inflaton field finally decays much later than the onset of the matter dominated phase, the entropy produced in its decay may be sufficient to counteract the excess of gravitinos produced during the last stages of warm inflation.

12 pages, 4 figures

References in corpus (19)

• Big-Bang Nucleosynthesis and Gravitino
• Warm Inflation and its Microphysical Basis
• Thermal production of gravitinos
• Constraints on the Reheating Temperature in Gravitino Dark Matter Scenarios
• Moduli-Induced Gravitino Problem
• Non-thermal Dark Matter and the Moduli Problem in String Frameworks
• Moduli Decays and Gravitinos
• Inflaton Decay in Supergravity
• The Gravitino-Overproduction Problem in Inflationary Universe
• Gravitinos from Heavy Scalar Decay
• Moduli/Inflaton Mixing with Supersymmetry Breaking Field
• Anomaly-Induced Inflaton Decay and Gravitino-Overproduction Problem
• Inflaton Decay through Supergravity Effects
• The warm inflationary universe
• Warm hilltop inflation
• Warm inflation dynamics in the low temperature regime
• The Gravitino-Overproduction Problem in Inflaton Decay
• The Relic Problem of String Gas Cosmology
• Inflaton Decay in Supergravity and Gravitino Problem

Cited by in corpus (2)

• Warm DBI Inflation
• Warm Inflection