The Cosmological Constant and the Deconstruction of Gravity
High Energy Physics - Theory
2010-04-05 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
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.
Cite
@article{arxiv.hep-th/0212057,
title = {The Cosmological Constant and the Deconstruction of Gravity},
author = {Vishnu Jejjala and Robert G. Leigh and Djordje Minic},
journal= {arXiv preprint arXiv:hep-th/0212057},
year = {2010}
}
Comments
LaTeX, 17 pages; references added, arguments clarified, discussion on the scaling of entropy added