380 citations · 4.5k across the 79 of their papers we have counts for
8 papers · 1 filter
Boosting GWs in Supersolid Inflation
Marco Celoria, Denis Comelli, Luigi Pilo +1
Inflation driven by a generic self-gravitating medium is an interesting alternative to study the impact of spontaneous spacetime symmetry breaking during a quasi de-Sitter phase, i…
Adiabatic Media Inflation
Marco Celoria, Denis Comelli, Luigi Pilo +1
We study the dynamics of inflation driven by an adiabatic self-gravitating medium, extending the previous works on fluid and solid inflation. Such a class of media comprises perfec…
Self-gravitating -media
Marco Celoria, Denis Comelli, Luigi Pilo
We address the question whether a medium featuring , dubbed - medium, has to be necessarily a cosmological constant. By using effective field theory, we show that this…
Intrinsic Entropy Perturbations from the Dark Sector
Marco Celoria, Denis Comelli, Luigi Pilo
Perfect fluids are modeled by using an effective field theory approach which naturally gives a self-consistent and unambiguous description of the intrinsic non-adiabatic contributi…
Fluids, Superfluids and Supersolids: Dynamics and Cosmology of Self Gravitating Media
Marco Celoria, Denis Comelli, Luigi Pilo
We compute cosmological perturbations for a generic self-gravitating media described by four derivatively- coupled scalar fields. Depending on the internal symmetries of the action…
A Way to Dynamically Overcome the Cosmological Constant Problem
Denis Comelli
The Cosmological Constant problem can be solved once we require that the full standard Einstein Hilbert lagrangian, gravity plus matter, is multiplied by a total derivative. We ana…