452 citations · 3.5k across the 64 of their papers we have counts for
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Did JWST observe imprints of axion miniclusters or primordial black holes?
Gert Hütsi, Martti Raidal, Juan Urrutia +2
The James Webb Space Telescope has detected surprisingly luminous early galaxies that indicate a tension with the CDM. Motivated by scenarios including axion miniclusters or pri…
Ruling out Initially Clustered Primordial Black Holes as Dark Matter
V. De Luca, G. Franciolini, A. Riotto +1
Combining constraints from microlensing and Lyman- forest, we provide a simple argument to show that large spatial clustering of stellar-mass primordial black holes at the time…
Anatomy of single-field inflationary models for primordial black holes
Alexandros Karam, Niko Koivunen, Eemeli Tomberg +2
We construct an analytically solvable simplified model that captures the essential features for primordial black hole (PBH) production in most models of single-field inflation. The…
Bubble dynamics in fluids with N-body simulations
Marek Lewicki, Ville Vaskonen, Hardi Veermäe
We present a new approach to studies of bubble dynamics in fluids. Relying on particle-based simulations, this method is general and suitable for cases where the commonly used perf…
The Linear Regime of Tachyonic Preheating
Niko Koivunen, Eemeli Tomberg, Hardi Veermäe
Tachyonic preheating is realized when the inflaton repeatedly returns to a convex region of the potential during the post-inflationary oscillating phase. This will induce a strong…