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Strong CP Problem with 10^{32} Standard Model Copies
Gia Dvali, Glennys R. Farrar
We show that a recently proposed solution to the Hierarchy Problem simultaneously solves the Strong CP Problem, without requiring an axion or any further new physics. Consistency o…
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…
Black Hole Bound on the Number of Species and Quantum Gravity at LHC
Gia Dvali, Michele Redi
In theories with a large number N of particle species, black hole physics imposes an upper bound on the mass of the species equal to M_{Planck}/\sqrt{N}. This bound suggests a nove…
Localization of Gauge Fields and Monopole Tunnelling
G. Dvali, H. B. Nielsen, N. Tetradis
We study the dynamical localization of a massless gauge field on a lower-dimensional surface (2-brane). In flat space, the necessary and sufficient condition for this phenomenon is…
Black Holes and Large N Species Solution to the Hierarchy Problem
Gia Dvali
We provide the perturbative and non-perturbative arguments showing that theories with large number of species of the quantum fields, imply an inevitable hierarchy between the masse…
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…