3 papers
gr-qc2025
Cosmological dynamical systems of non-minimally coupled fluids and scalar fields
Hala A. Ashi, Christian G. Boehmer, Antonio d'Alfonso del Sordo +1
We study the cosmological dynamics of non-minimally coupled matter models using the Brown's variational approach to relativistic fluids in General Relativity. After decomposing the…
astro-ph.CO2025
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
gr-qc2021
Modified gravity: a unified approach
Christian G. Boehmer, Erik Jensko
Starting from the original Einstein action, sometimes called the Gamma squared action, we propose a new setup to formulate modified theories of gravity. This can yield a theory wit…