The Cosmological Constant and the Deconstruction of Gravity

Details The Cosmological Constant and the Deconstruction of Gravity The Cosmological Constant and the Deconstruction of Gravity

2002-12-04

arxiv.org/abs/hep-th/0212057v2

Phys.Lett. B556 (2003) 71-79

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 17 pages; references added, arguments clarified, discussion on the scaling of entropy added

Scientific paper

10.1016/S0370-2693(03)00101-1

Witten has presented an argument for the vanishing of the cosmological constant in 2+1 dimensions. This argument is crucially tied to the specific properties of (2+1)-dimensional gravity. We argue that this reasoning can be deconstructed to 3+1 dimensions under certain conditions. Our observation is also tied to a possibility that there exists a well-defined UV completion of (3+1)-dimensional gravity.

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