401 citations · 641 across the 12 of their papers we have counts for
4 papers · 1 filter
Beyond Perturbation Theory in Inflation
Marco Celoria, Paolo Creminelli, Giovanni Tambalo +1
Inflationary perturbations are approximately Gaussian and deviations from Gaussianity are usually calculated using in-in perturbation theory. This method, however, fails for unlike…
On the 6th Mode in Massive Gravity
Marco Celoria, Denis Comelli, Luigi Pilo
Generic massive gravity models in the unitary gauge correspond to a self-gravitating medium with six degrees of freedom. It is widely believed that massive gravity models with six…
Disformal invariance of continuous media with linear equation of state
M. Celoria, S. Matarrese, L. Pilo
We show that the effective theory describing single component continuous media with a linear and constant equation of state of the form is invariant under a 1-parameter fami…
Living with ghosts in Horava-Lifshitz gravity
S. Ramazanov, F. Arroja, M. Celoria +2
We consider the branch of the projectable Horava-Lifshitz model which exhibits ghost instabilities in the low energy limit. It turns out that, due to the Lorentz violating structur…