Primordial black holes from thermal inflation

@article{Dimopoulos2019PrimordialBH,
  title={Primordial black holes from thermal inflation},
  author={Konstantinos Dimopoulos and Tommi Markkanen and Antonio Racioppi and Ville Vaskonen},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2019}
}
We present a novel mechanism for the production of primordial black holes (PBHs). The mechanism is based on a period of thermal inflation followed by fast-roll inflation due to tachyonic mass of order the Hubble scale. Large perturbations are generated at the end of the thermal inflation as the thermal inflaton potential turns from convex to concave. These perturbations can lead to copious production of PBHs when the relevant scales re-enter horizon. We show that such PBHs can naturally account… 

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References

SHOWING 1-10 OF 108 REFERENCES
Primordial black holes from single field models of inflation
Abstract Primordial black holes (PBH) have been shown to arise from high peaks in the matter power spectra of multi-field models of inflation. Here we show, with a simple toy model, that it is also
Primordial black hole production in Critical Higgs Inflation
Abstract Primordial Black Holes (PBH) arise naturally from high peaks in the curvature power spectrum of near-inflection-point single-field inflation, and could constitute today the dominant
Gravitational Waves from Primordial Black Hole Mergers
We study the production of primordial black hole (PBH) binaries and the resulting merger rate, accounting for an extended PBH mass function and the possibility of a clustered spatial distribution.
Revisiting Primordial Black Holes Constraints from Ionization History
Much attention has been drawn to the recent discoveries by the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) of merging intermediate mass black holes. Of particular interest is
Single Field Double Inflation and Primordial Black Holes
Within the framework of scalar-tensor theories, we study the conditions that allow single field inflation dynamics on small cosmological scales to significantly differ from that of the large scales
The initial spin probability distribution of primordial black holes
We study the spin of primordial black holes produced by the collapse of large inhomogeneities in the early universe. Since such primordial black holes originate from peaks, that is, from maxima of
Calculating the mass spectrum of primordial black holes
We reinspect the calculation for the mass fraction of primordial black holes (PBHs) which are formed from primordial perturbations, finding that performing the calculation using the comoving
Cosmic microwave background limits on accreting primordial black holes
Interest in the idea that primordial black holes (PBHs) might comprise some or all of the dark matter has recently been rekindled following LIGO’s first direct detection of a binary-black-hole
How Thermal Inflation can save Minimal Hybrid Inflation in Supergravity
Minimal hybrid inflation in supergravity has been ruled out by the 2015 Planck observations because the spectral index of the produced curvature perturbation falls outside observational bounds. To
Formation and evolution of primordial black hole binaries in the early universe
The abundance of primordial black holes (PBHs) in the mass range $0.1 - 10^3 M_\odot$ can potentially be tested by gravitational wave observations due to the large merger rate of PBH binaries formed
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