2 citations · 2 across the 4 of their papers we have counts for
6 papers
Gravitational ultra-relativistic freeze-out during general reheating
Mathieu Gross, Stephen E. Henrich, Fotis Koutroulis
We investigate ultrarelativistic freeze-out (UFO) in the context of generic reheating scenarios. While the standard WIMP dark matter paradigm has been extensively studied, UFO has…
UV-complete and stable Quintom Dark Energy models in the light of DESI DR2
Fotis Koutroulis
We propose that Quintom dark energy, the simplest framework allowing crossing of the cosmological-constant boundary, admits a natural UV completion in a 5D anisotropic orbifold lat…
Quark, lepton and right-handed neutrino production via inflation
Duarte Feiteira, Fotis Koutroulis, Oleg Lebedev +1
Inflationary expansion of space-time provides us with an efficient particle production mechanism in the Early Universe. The fermion production efficiency depends critically on the…
The thermal backreaction of a scalar field in de Sitter spacetime
Nikos Irges, Antonis Kalogirou, Fotis Koutroulis
We argue that a scalar field in de Sitter spacetime should feel explicit thermal effects associated with its curvature. Starting from the Bunch-Davies vacuum and a scalar field wit…
Dark Branes for Dark Matter
Fotis Koutroulis, Eugenio Megias, Stefan Pokorski +1
We propose a setup for the origin of dark matter based on spacetime with a warped extra dimension and three branes: the Planck brane, the TeV brane, at a (few) TeV scale , an…
Machine Learning Classification of Sphalerons and Black Holes at the LHC
Aurora Singstad Grefsrud, Trygve Buanes, Fotis Koutroulis +6
In models with large extra dimensions, "miniature" black holes (BHs) might be produced in high-energy proton-proton collisions at the Large Hadron Collider (LHC). In the semi-class…