Inflationary preheating and primordial black holes

Bruce A. Bassett, Shinji Tsujikawa

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)


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

Original languageEnglish
Article number123503
Pages (from-to)1235031-1235037
Number of pages7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number12
Publication statusPublished - 2001

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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