Primordial black hole formation and hybrid inflation

Abstract

We calculate the contribution to the curvature perturbation, that is generated while the waterfall field grows exponentially (which can occur only if the waterfall field mass is $m\gg H$). We consider the upper bound on its spectrum coming from constraints on the abundance of primordial black holes, taking account of possible non-gaussianity. The constraint is satisfied, but extrapolation of our result to the regime $m\sim H$ suggests that the constraint might not be satisfied there.

References in corpus (3)

• New cosmological constraints on primordial black holes
• Separate Universes Do Not Constrain Primordial Black Hole Formation
• Curvature perturbation and waterfall dynamics in hybrid inflation

Cited by in corpus (11)

• Single Field Double Inflation and Primordial Black Holes
• Parity Violating Statistical Anisotropy
• Gravitational Waves and Primordial Black Holes from Supersymmetric Hybrid Inflation
• Curvature perturbation spectra from waterfall transition, black hole constraints and non-Gaussianity
• Primordial Black Holes from Thermal Inflation
• A Density Spike on Astrophysical Scales from an N-Field Waterfall Transition
• Hybrid Natural Inflation
• Local Features with Large Spiky non-Gaussianities during Inflation
• Inflation Driven by Unification Energy
• Density Perturbations in Hybrid Inflation Using a Free Field Theory Time-Delay Approach
• Primordial black hole formation from non-Gaussian curvature perturbations