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The Accelerated Universe and the Moon
Gia Dvali, Andrei Gruzinov, Matias Zaldarriaga
Cosmologically motivated theories that explain small acceleration rate of the Universe via modification of gravity at very large, horizon or super-horizon distances, can be tested…
Non-Local Modification of Gravity and the Cosmological Constant Problem
Nima Arkani-Hamed, Savas Dimopoulos, Gia Dvali +1
We propose a phenomenological approach to the cosmological constant problem based on generally covariant non-local and acausal modifications of four-dimensional gravity at enormous…
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…