Inflationary preheating and primordial black holes

Bassett, Bruce A.; Tsujikawa, Shinji

doi:10.1103/PhysRevD.63.123503

Inflationary preheating and primordial black holes

Bruce A. Bassett
(
- Portsmouth U., ICG
)
,
Shinji Tsujikawa
(
- Waseda U.
)

Aug, 2000

6 pages

Published in:

Phys.Rev.D 63 (2001) 123503

e-Print:

hep-ph/0008328 [hep-ph]

DOI:

10.1103/PhysRevD.63.123503

Report number:

RCG-00-27,
WUAP-00-22

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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.

inflation
preheating
black hole: production
back reaction
chaos
Einstein equation: linear
numerical calculations

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