2 papers
gr-qc2024
Scale-dependent and background-preserving gravity from an action: cosmological tests
Wiliam S. Hipólito-Ricaldi, Rodrigo von Marttens, Felipe de Melo-Santos +1
We investigate the observational implications of a gravitational model wherein the gravitational constant and the cosmological constant exhibit scale-dependent behavior at…
gr-qc2019
Cosmological framework for renormalization group extended gravity at the action level
Nicolas R. Bertini, Wiliam S. Hipolito-Ricaldi, Felipe de Melo-Santos +1
General relativity (GR) extensions based on renormalization group (RG) flows may lead to scale-dependent couplings with nontrivial effects at large distance scales. Here we develop…