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…
Cosmological structure growth in energy-momentum squared gravity
Alvaro de la Cruz-Dombriz, Peter K. S. Dunsby, Payel Sarkar
We investigate the cosmological evolution of matter perturbations in the modified gravity model , where denotes the quadratic contraction of the en…
Close Hyperbolic Encounters In f(R) Gravity
Jenna Bruton, Peter Dunsby, Alvaro de la Cruz-Dombriz
We explore the dynamics and gravitational-wave emission from black hole pairs on unbound orbits undergoing close hyperbolic encounters (CHEs) in dense astrophysical environments. W…
Toward a realistic Buchdahl limit in f(R) theories of gravity
Raul Carpio Fernandez, Alvaro de la Cruz-Dombriz
The so-called Buchdahl limit is not yet fully understood in the context of theories of gravity beyond the Einsteinian framework. In this investigation, we generalize this limit for…