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astro-ph.CO2026
Ultra-slow-roll Inflation with Non-perturbative Non-Gaussianity and Scalar Induced Gravitational Waves
Manuel Drees, Chenhuan Wang
An ultra-slow-roll phase during inflation could potentially produce the right abundance of primordial black holes (PBHs) for them to form all of dark matter (DM). We consider such…
astro-ph.CO2026
Accretion Effects on Primordial Black Hole Reheating Constraints
Chenhuan Wang
In this work, we study the effects of accretion on the primordial black hole (PBH) reheating scenario. PBHs could form from primordial fluctuations. If they have the right mass and…
astro-ph.CO2025
Inflaton Self Resonance, Oscillons, and Gravitational Waves in Small Field Polynomial Inflation
Manuel Drees, Chenhuan Wang
In this work, we investigate the post-inflationary dynamics of a simple single-field model with a renormalizable inflaton potential featuring a near-inflection point at a field val…