Primordial black hole production due to preheating

Details Primordial black hole production due to preheating Primordial black hole production due to preheating

2000-08-11

arxiv.org/abs/hep-ph/0008113v2

Phys.Rev.D64:021301,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 eps figures. Minor changes to match version to appear in PRD as a rapid communication

Scientific paper

10.1103/PhysRevD.64.021301

During the preheating process at the end of inflation the amplification of field fluctuations can lead to the amplification of curvature perturbations. If the curvature perturbations on small scales are sufficiently large, primordial black holes (PBHs) will be overproduced. In this paper we study PBH production in the two-field preheating model with quadratic inflaton potential. We show that for many values of the inflaton mass m, and coupling g, small scale perturbations will be amplified sufficiently, before backreaction can shut off preheating, so that PBHs will be overproduced during the subsequent radiation dominated era.

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