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arXiv · hep-ph/0008328

Inflationary preheating and primordial black holes

Bruce A. Bassett·Shinji Tsujikawa
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Abstract

Preheating after inflation may over-produce primordial black holes (PBH's) in many regions of parameter space. As an example we study two-field models with a massless self-interacting inflaton, taking into account second order field and metric backreaction effects as spatial averages. We find that a complex quilt of parameter regions above the Gaussian PBH over-production threshold emerges due to the enhancement of curvature perturbations on all scales. It should be possible to constrain realistic models of inflation through PBH over-production although many issues, such as rescattering and non-Gaussianity, remain unsolved or unexplored.

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Bruce A. Bassett, Shinji Tsujikawa. 2001-01-11. Inflationary preheating and primordial black holes. https://doi.org/10.1103/physrevd.63.123503

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