3 papers
astro-ph.CO2026
The sound of dynamical dark energy and modified gravity
João Rebouças, Guilherme Brando, Felipe T. Falciano +1
Different candidate models are able to reproduce the dynamical dark energy signal preferred by combinations of recent distance measurements. These models may be distinguished by th…
hep-ph2026
Non-Relativistic Cosmological Collider Signals
Matheus C. Ferreira, F. T. Falciano
We investigate a non-relativistic realization of the boostless cosmological collider in a scenario where inflationary interactions are mediated by a massive tilted-ghost spectator…
astro-ph.CO2025
Testing inflation on all scales: a case study with -attractors
Laura Iacconi, Michael Bacchi, Luiz Filipe Guimarães +1
A plethora of inflationary models can produce interesting small-scale phenomenology, such as enhanced scalar fluctuations leading to primordial black hole (PBH) production and larg…