Scale-dependent gravitational couplings in Parameterised Post-Newtonian Cosmology
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/04/016
Abstract: Parameterised Post-Newtonian Cosmology (PPNC) is a theory-agnostic framework for testing gravity in cosmology, which connects gravitational physics on small and large scales in the Universe. It is a direct extension of the Parameterised Post-Newtonian (PPN)… read more here.
Keywords: newtonian cosmology; post newtonian; gravitational couplings; cosmology ... See more keywords
Running gravitational couplings, decoupling, and curved spacetime renormalization
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.045021
Abstract: We propose to slightly generalize the DeWitt-Schwinger adiabatic renormalization subtractions in curved space to include an arbitrary renormalization mass scale $\mu$. The new predicted running for the gravitational couplings are fully consistent with decoupling of… read more here.
Keywords: decoupling curved; couplings decoupling; renormalization; running gravitational ... See more keywords