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23 papers · 2 filters
On How Neutrino Protects the Axion
Gia Dvali, Sarah Folkerts, Andre Franca
We show how the neutrino can sacrifice itself to quantum gravity and save the axion solution to the strong-CP problem. This mechanism puts an upper bound on the lightest neutrino m…
Quantum Compositeness of Gravity: Black Holes, AdS and Inflation
Gia Dvali, Cesar Gomez
Gravitational backgrounds, such as black holes, AdS, de Sitter and inflationary universes, should be viewed as composite of N soft constituent gravitons. It then follows that such…
Living with the Wrong Sign
Patrick Cooper, Sergei Dubovsky, Ali Mohsen
We describe a UV complete asymptotically fragile Lorentz-invariant theory exhibiting superluminal signal propagation. Its low energy effective action contains "wrong" sign higher d…
Metastability and instability in holographic gauge theories
Matthew Kleban, Albion Lawrence, Matthew M. Roberts +1
We review and extend previous results regarding the stability and thermodynamics of Anti-de Sitter (AdS) spacetime at finite temperature. Using a combination of analytic and numeri…
Gribov-Zwanziger action in SU(2) Maximally Abelian Gauge with U(1) Landau Gauge
Shinya Gongyo, Hideaki Iida
We construct the local Gribov-Zwanziger action for SU(2) Euclidean Yang-Mills theories in the maximally Abelian (MA) gauge with U(1) Landau gauge fixing based on the Zwanziger'…
Vacuum structure in a chiral R+R^n modification of pure supergravity
Sergio Ferrara, Alex Kehagias, Massimo Porrati
We discuss an class of modified , D=4 supergravity models where the deformation is a monomial in the chiral scalar curvature m…