160 citations · 247 across the 4 of their papers we have counts for
5 papers · 1 filter
Non Pauli-Fierz Massive Gravitons
Gia Dvali, Oriol Pujolas, Michele Redi
We study general Lorentz invariant theories of massive gravitons. We show that, contrary to the standard lore, there exist consistent theories where the graviton mass term violates…
Cascading DGP
Claudia de Rham, Gia Dvali, Stefan Hofmann +4
We present a higher codimension generalization of the DGP scenario which, unlike previous attempts, is free of ghost instabilities. The 4D propagator is made regular by embedding o…
Bubbles in the Self-Accelerating Universe
Keisuke Izumi, Kazuya Koyama, Oriol Pujolas +1
We revisit the issue of the stability in the Dvali-Gabadadze-Porrati model, by considering the nucleation of bubbles of the conventional branch within the self-accelerating branch.…
Consistent Lorentz Violation in Flat and Curved Space
Gia Dvali, Oriol Pujolas, Michele Redi
Motivated by the severity of the bounds on Lorentz violation in the presence of ordinary gravity, we study frameworks in which Lorentz violation does not affect the spacetime geome…
Domain Walls As Probes Of Gravity
Gia Dvali, Gregory Gabadadze, Oriol Pujolas +1
We show that domain walls are probes that enable one to distinguish large-distance modified gravity from general relativity (GR) at short distances. For example, low-tension domain…