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astro-ph.CO2025
Has ACT measured radiative corrections to the tree-level Higgs-like inflation?
Ioannis D. Gialamas, Alexandros Karam, Antonio Racioppi +1
Starobinsky inflation and nonminimally coupled (NMC) Higgs inflation have been among the most favored models of the early Universe, as their predictions for the scalar spectral ind…
astro-ph.CO2025
How deep is the dip and how tall are the wiggles in inflationary power spectra?
Vadim Briaud, Alexandros Karam, Niko Koivunen +3
We study linear scalar perturbations in single-field models of inflation featuring a non-attractor phase. These models lead to a peak in the curvature power spectrum that may resul…