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13 papers · 2 filters
3-D Interacting CFTs and Generalized Higgs Phenomenon in Higher Spin Theories on AdS
L. Girardello, M. Porrati, A. Zaffaroni
We study a duality, recently conjectured by Klebanov and Polyakov, between higher-spin theories on AdS_4 and O(N) vector models in 3-d. These theories are free in the UV and intera…
Global Structure of Deffayet (Dvali-Gabadadze-Porrati) Cosmologies
Arthur Lue
We detail the global structure of the five-dimensional bulk for the cosmological evolution of Dvali-Gabadadze-Porrati braneworlds. The picture articulated here provides a framework…
The Covariant Quantum Superstring and Superparticle from their Classical Actions
P. A. Grassi, G. Policastro, P. van Nieuwenhuizen
We develop an approach based on the Noether method to construct nilpotent BRST charges and BRST-invariant actions. We apply this approach first to the holomorphic part of the flat-…
Solitonic D-branes and brane annihilation
Gia Dvali, Alexander Vilenkin
We point out some intriguing analogies between field theoretic solitons (topological defects) and D-branes. Annihilating soliton-antisoliton pairs can produce stable solitons of lo…
Diluting Cosmological Constant via Large Distance Modification of Gravity
Gia Dvali, Gregory Gabadadze, M. Shifman
We review a solution of the cosmological constant problem in a brane-world model with infinite-volume extra dimensions. The solution is based on a nonlinear generally covariant the…
Observations on the Holographic Duals of 4-D Extremal Black Holes
S. Ferrara, M. Porrati
We argue that extremal black holes of N=4 Poincare supergravity coupled to conformal matter have a quantum-exact dual 5-d description in the maximally supersymmetric extension of t…