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See-Saw Modification of Gravity
Gia Dvali, Gregory Gabadadze, Xin-rui Hou +1
We discuss a model in which the fundamental scale of gravity is restricted to 10^{-3} eV. An observable modification of gravity occurs simultaneously at the Hubble distance and at…
Scales of Gravity
Gia Dvali, Gregory Gabadadze, Marko Kolanovic +1
We propose a framework in which the quantum gravity scale can be as low as eV. The key assumption is that the Standard Model ultraviolet cutoff is much higher than the qu…
Nonperturbative Continuity in Graviton Mass versus Perturbative Discontinuity
Cedric Deffayet, Gia Dvali, Gregory Gabadadze +1
We address the question whether a graviton could have a small nonzero mass. The issue is subtle for two reasons: there is a discontinuity in the mass in the lowest tree-level appro…
Braneworld Flattening by a Cosmological Constant
Cedric Deffayet, Gia Dvali, Gregory Gabadadze +1
We present a model with an infinite volume bulk in which a braneworld with a cosmological constant evolves to a static, 4-dimensional Minkowski spacetime. This evolution occurs for…
Field theory models for variable cosmological constant
Gia Dvali, Alexander Vilenkin
Anthropic solutions to the cosmological constant problem require seemingly unnatural scalar field potentials with a very small slope or domain walls (branes) with a very small coup…