370 citations · 2.4k across the 38 of their papers we have counts for
5 papers · 1 filter
Chiral gravitational waves and primordial black holes in UV-protected Natural Inflation
Juan P. Beltrán Almeida, Nicolás Bernal, Dario Bettoni +1
We consider an UV-protected Natural Inflation scenario involving Chern-Simons-like interactions between the inflaton and some beyond the Standard Model gauge fields. The accelerate…
One residue to rule them all: Electroweak symmetry breaking, inflation and field-space geometry
Georgios K. Karananas, Marco Michel, Javier Rubio
We point out that the successful generation of the electroweak scale via gravitational instanton configurations in certain scalar-tensor theories can be viewed as the aftermath of…
UV Freeze-in in Starobinsky Inflation
Nicolás Bernal, Javier Rubio, Hardi Veermäe
In the Starobinsky model of inflation, the observed dark matter abundance can be produced from the direct decay of the inflaton field only in a very narrow spectrum of close-to-con…
Boosting Ultraviolet Freeze-in in NO Models
Nicolás Bernal, Javier Rubio, Hardi Veermäe
We present a novel UV freeze-in mechanism for enhancing the dark matter abundance in cosmologies where inflation is followed by an epoch dominated by a fluid stiffer than radiation…
Scale symmetry, the Higgs and the Cosmos
Javier Rubio
I review the Higgs-Dilaton model: a scale-invariant extension of the Standard Model and gravity able to support inflation and dark energy with just an additional degree of freedom…