From the 1 of 4 linked papers with an AI index.
4 papers
A Tale of Two Couplings: Bayesian Selection in the Interacting Dark Sector
Miguel Barroso Varela, Ãlvaro de la Cruz-Dombriz, Álvaro de la Cruz-Dombriz
CDM provides a remarkably successful description of the Universe, yet it suffers from persistent discrepancies, with one of the most prominent being the tension between ea…
Non-Minimally Coupled Chain Inflation at High Scales
Miguel Barroso Varela, Orfeu Bertolami, Katherine Freese +1
The paper investigates how a non‑minimal coupling between a scalar field and gravity modifies chain inflation, affecting tunneling rates, the scalar spectral index, and producing a…
Cosmological and lunar laser ranging constraints on evolving dark energy in a nonminimally coupled curvature-matter gravity model
Riccardo March, Miguel Barroso Varela, Orfeu Bertolami +3
We analyze a cosmological solution to the field equations of a modified gravity model where curvature and matter are nonminimally coupled. The current Universe's accelerated expans…
Implications of gravity on late-time cosmic structure growth through a complete description of density perturbations
Miguel Barroso Varela, Ãlvaro de la Cruz-Dombriz
We provide insight about the full form of the equations for matter density perturbations and the scalar Bardeen metric potentials in general theories of gravity. When consid…