401 citations · 2.3k across the 45 of their papers we have counts for
6 papers · 1 filter
Linearised stability analysis of generic thin shells
Francisco S. N. Lobo, Prado Martin-Moruno, Nadiezhda Montelongo Garcia +1
We construct generic spherically symmetric thin shells by using the cut-and-paste procedure. We take considerable effort to make the analysis as general and unified as practicable;…
Bounces, turnarounds and singularities in bimetric gravity
Salvatore Capozziello, Prado Martin-Moruno
In this letter, we consider cosmological solutions of bimetric theory without assuming that only one metric is coupled to gravity. We conclude that any cosmology can be described b…
Null Energy Condition violations in bimetric gravity
Valentina Baccetti, Prado Martin-Moruno, Matt Visser
We consider the effective stress-energy tensors for the foreground and background sectors in ghost-free bimetric gravity. By considering the symmetries of the theory, we show that…
Gordon and Kerr-Schild ansatze in massive and bimetric gravity
Valentina Baccetti, Prado Martin-Moruno, Matt Visser
We develop the "generalized Gordon ansatz" for the ghost-free versions of both massive and bimetric gravity, an ansatz which is general enough to include almost all spacetimes comm…
Massive gravity from bimetric gravity
Valentina Baccetti, Prado Martin-Moruno, Matt Visser
We discuss the subtle relationship between massive gravity and bimetric gravity, focusing particularly on the manner in which massive gravity may be viewed as a suitable limit of b…
Could a foliation by constant mean curvature hypersurfaces cover the existence of most observers in our part of spacetime?
Prado Martin-Moruno
We present a foliation by constant mean curvature hypersurfaces of a de Sitter space with a thin-wall Coleman-De Luccia bubble of de Sitter space inside, which covers the existence…