20 citations · 44 across the 8 of their papers we have counts for
4 papers · 1 filter
Effective fluid mixture of tensor-multi-scalar gravity
Marcello Miranda, Pierre-Antoine Graham, Valerio Faraoni
We apply to tensor-multi-scalar gravity the effective fluid analysis based on the representation of the gravitational scalar field as a dissipative effective fluid. This generaliza…
Fluid nature constrains Horndeski gravity
Marcello Miranda, Daniele Vernieri, Salvatore Capozziello +1
The elusive physical nature of Horndeski gravity is elucidated in a new approach depicting this class of theories as a dissipative effective fluid. Requiring the constitutive equat…
Generalized McVittie geometry in Horndeski gravity with matter
Marcello Miranda, Daniele Vernieri, Salvatore Capozziello +1
We investigate McVittie and generalized McVittie solutions for Horndeski gravity with a spatially homogeneous gravitational scalar field, which is stealth at small scales near the…
Bouncing Cosmology in Fourth-Order Gravity
Marcello Miranda, Daniele Vernieri, Salvatore Capozziello +1
The Big Bang initial singularity problem can be solved by means of bouncing solutions. In the context of extended theories of gravity, we will look for covariant effective actions…