116 citations · 370 across the 13 of their papers we have counts for
14 papers · 1 filter
The Goldstone Awakens: Unimodular dark energy in scale-invariant gravity
Mariaveronica De Angelis, Javier Rubio
We construct an cosmology based on scale invariance and unimodular gravity in which the Goldstone boson of dilatations establishes a predictive connection between inflation a…
Observational Constraints on Early Coupled Quintessence
Lisa W. K. Goh, Joan Bachs-Esteban, Adrià Gómez-Valent +2
We investigate an Early Coupled Quintessence model where a light scalar mediates a fifth force stronger than gravity among dark matter particles and leads to the growth of perturba…
Ricci Reheating Reloaded
Giorgio Laverda, Javier Rubio
A Hubble-induced phase transition is a natural spontaneous symmetry breaking mechanism allowing for explosive particle production in non-oscillatory models of inflation involving n…
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…
Hubble-induced phase transitions: Walls are not forever
Dario Bettoni, Javier Rubio
The interplay between non-minimally coupled scalar fields and a kinetic-dominated era following the end of inflation triggers the spontaneous symmetry breaking of internal symmetri…
Primordial dark matter halos from fifth forces
Stefano Savastano, Luca Amendola, Javier Rubio +1
We argue that primordial dark matter halos could be generated during radiation domination by long range attractive forces stronger than gravity. In this paper we derive the conditi…