106 citations · 168 across the 6 of their papers we have counts for
3 papers · 1 filter
Higgs-like spectator field as the origin of structure
Alexandros Karam, Tommi Markkanen, Luca Marzola +3
We show that the observed primordial perturbations can be entirely sourced by a light spectator scalar field with a quartic potential, akin to the Higgs boson, provided that the fi…
Novel mechanism for CMB modulation in the Standard Model
Alexandros Karam, Tommi Markkanen, Luca Marzola +3
We demonstrate that light spectator fields can source sizeable CMB anisotropies through modulated reheating even in the absence of direct couplings to the inflaton. The effect aris…
Dark matter and neutrino masses from a classically scale-invariant multi-Higgs portal
Alexandros Karam, Kyriakos Tamvakis
We present a classically scale-invariant model where the dark matter, neutrino and electroweak mass scales are dynamically generated from dimensionless couplings. The Standard Mode…