Inflatonic Q-ball evaporation: A new paradigm for reheating the Universe

Details Inflatonic Q-ball evaporation: A new paradigm for reheating the Universe Inflatonic Q-ball evaporation: A new paradigm for reheating the Universe

2002-11-15

arxiv.org/abs/hep-ph/0211233v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, Talk given at SUSY-02, DESY

Scientific paper

We show that the inflaton condensate associated with a global symmetry can fragment into quasi stable Q balls after the end of inflation, provided the inflaton oscillations give rise to an effective equation of state with negative pressure. We argue that chaotic inflation with a running inflaton mass may give rise to the desired scenario where the process of fragmentation into inflatonic Q balls can actually take place even though there is total zero charge. We show that such inflatonic Q balls will reheat the Universe to a sufficiently low temperature via surface evaporation.

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