The Decay of the Inflaton in No-scale Supergravity

Details The Decay of the Inflaton in No-scale Supergravity The Decay of the Inflaton in No-scale Supergravity

2006-12-20

arxiv.org/abs/hep-ph/0612263v2

JCAP 0702:018,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Added the footnote in the conclusion section which discusses the constrains on the explicit inflaton couplings to the matter f

Scientific paper

10.1088/1475-7516/2007/02/018

We study the decay of the inflaton in no-scale supergravity and show that decay due to the gravitational interactions through supergravity effects is highly suppressed relative to the case in minimal supergravity or models with a generic Kahler potential. We also show that decay to gravitinos is suppressed. We demonstrate that decay and sufficient reheating are possible with the introduction of a non-trivial gauge kinetic term. This channel may be dominant in no-scale supergravity, yet yields a re-heating temperature which is low enough to avoid the gravitino problem while high enough for Big Bang Nucleosynthesis and baryogenesis.

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