Steep Inflation followed by Born-Infeld Reheating

Details Steep Inflation followed by Born-Infeld Reheating Steep Inflation followed by Born-Infeld Reheating

2003-04-22

arxiv.org/abs/hep-th/0304187v3

Phys.Lett. B568 (2003) 118-126

Physics

High Energy Physics

High Energy Physics - Theory

Final version accepted in PLB ; some clarifications and references added

Scientific paper

10.1016/j.physletb.2003.07.001

We discuss a model in which high energy brane corrections allow a single scalar field to describe inflation at early epochs and quintessence at late times. The reheating mechanism in the model originates from Born-Infeld matter whose energy density mimics cosmological constant at very early times and manifests itself as radiation subsequently. For most of the inflationary evolution the Born-Infeld matter remains subdominant to the the scalar field. Shortly before the end of inflation driven by the scalar field, the energy density of Born-Infeld matter starts scaling as radiation and drops by several orders of magnitudes at the epoch inflation ends. The problem of over production of gravity wave background in scenarios based upon reheating through gravitational particle production is successfully resolved by suitably fixing the initial value of radiation energy density at the end of inflation. No additional fine tuning of the parameters is required for a viable evolution.

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