68 citations · 361 across the 16 of their papers we have counts for
13 papers · 1 filter
Inflation in Extra-Dimensions with one or two branes
Nicolás Bernal, Catarina Cosme, Andrea Donini +1
In this paper, we study two inflationary models, namely, monomial inflation and the simplest -attractor inflation, within extra-dimensional frameworks. We consider three extra-d…
Temperature evolution in the Early Universe and freeze-in at stronger coupling
Catarina Cosme, Francesco Costa, Oleg Lebedev
Dark matter freeze-in at stronger coupling is operative when the Standard Model (SM) bath temperature never exceeds the dark matter mass. An attractive feature of this scenario is…
Freeze-in at stronger coupling
Catarina Cosme, Francesco Costa, Oleg Lebedev
Predictivity of many non-thermal dark matter (DM) models is marred by the gravitational production background. This problem is ameliorated in models with lower reheating temperatur…
Baryogenesis and Dark Matter in Multiple Hidden Sectors
Hassan Easa, Thomas Gregoire, Daniel Stolarski +1
We explore a mechanism for producing the baryon asymmetry and dark matter in models with multiple hidden sectors that are Standard-Model-like but with varying Higgs mass parameters…
Testing freeze-in with axial and vector bosons
Catarina Cosme, Maíra Dutra, Stephen Godfrey +1
The freeze-in production of Feebly Interacting Massive Particle (FIMP) dark matter in the early universe is an appealing alternative to the well-known - and constrained - Weakly In…
Neutrino Portal to FIMP Dark Matter with an Early Matter Era
Catarina Cosme, Maíra Dutra, Teng Ma +2
We study the freeze-in production of Feebly Interacting Massive Particle (FIMP) dark matter candidates through a neutrino portal. We consider a hidden sector comprised of a fermion…