Author:
Braglia Matteo,Linde Andrei,Kallosh Renata,Finelli Fabio
Abstract
Abstract
We investigate the two-stage inflation regime in the theory of hybrid cosmological
α-attractors. The spectrum of inflationary perturbations is compatible with the latest
Planck/BICEP/Keck Array results, thanks to the attractor properties of the model. However, at
smaller scales, it may have a very high peak of controllable width and position, leading to a
copious production of primordial black holes (PBH) and generation of a stochastic background of
gravitational waves (SGWB).
Subject
Astronomy and Astrophysics
Cited by
31 articles.
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