Lattice study of primordial black hole formation in bumpy axion inflation

arXiv:2607.01780 · astro-ph.CO, hep-ph · Submitted 2026-07-02 · Read on arXiv

Masahiro Kawasaki, Kai Murai, Shunsuke Tsuchida

astro-ph.CO, hep-ph

Submitted: 2026-07-02

Comments: 26 pages, 9 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Abundance — 12× in this paper · explained in 1 episode
• Non-Gaussianity — 7× in this paper · explained in 2 episodes
• Microlensing — 3× in this paper · explained in 2 episodes
• Reheating — 2× in this paper · explained in 2 episodes
• Square Kilometre Array — 2× in this paper
• Symmetry Breaking — 2× in this paper · explained in 3 episodes
• 21-cm signal — 1× in this paper · explained in 1 episode
• Bispectrum — 1× in this paper · explained in 3 episodes
• Primordial Black Holes (PBHs) — 1× in this paper · explained in 7 episodes

Sources

• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• Primordial Black Holes as All Dark Matter
• Primordial seeds of supermassive black holes
• Massive Primordial Black Holes from Hybrid Inflation as Dark Matter and the seeds of Galaxies
• PBH Dark Matter in Supergravity Inflation Models
• Inflationary primordial black holes for the LIGO gravitational wave events and pulsar timing array experiments
• Inflationary Primordial Black Holes as All Dark Matter
• Primordial black holes from single field models of inflation
• Primordial black holes and second order gravitational waves from ultra-slow-roll inflation
• Double inflation as a single origin of primordial black holes for all dark matter and LIGO observations
• Primordial Black Holes from $\alpha$-attractors
• Primordial black holes dark matter from inflection point models of inflation and the effects of reheating
• PBH in single field inflation: the effect of shape dispersion and non-Gaussianities
• Primordial Black Holes from a tiny bump/dip in the Inflaton potential
• Generating primordial features at large scales in two field models of inflation
• Turning in the landscape: a new mechanism for generating Primordial Black Holes
• Generating PBHs and small-scale GWs in two-field models of inflation
• Primordial black holes and oscillating gravitational waves in slow-roll and slow-climb inflation with an intermediate non-inflationary phase
• PBHs and secondary GWs from ultra slow roll and punctuated inflation
• On Primordial Black Holes from Rapid Turns in Two-field Models

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