Is nonperturbative inflatino production during preheating a real threat to cosmology?

Details Is nonperturbative inflatino production during preheating a real threat to cosmology? Is nonperturbative inflatino production during preheating a real threat to cosmology?

2000-12-05

arxiv.org/abs/hep-ph/0012057v2

Phys.Rev. D64 (2001) 023516

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Updates to match the accepted version in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.64.023516

We discuss toy models where supersymmetry is broken due to non-vanishing time-varying vacuum expectation value of the inflaton field during preheating. We discuss the production of inflatino the superpartner of inflaton due to vacuum fluctuations and then we argue that they do not survive until nucleosynthesis and decay along with the inflaton to produce a thermal bath after preheating. Thus the only relevant remnant is the helicity \pm 3/2 gravitinos which can genuinely cause problem to nucleosynthesis.

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