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arXiv · hep-th/0004058

Six Dimensional Topological Gravity and the Cosmological Constant Problem

G. Bonelli·A. M. Boyarsky
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Abstract

We formulate a topological theory in six dimensions with gauge group SO(3,3) which reduces to gravity on a four dimensional defect if suitable boundary conditions are chosen. In such a framework we implement the reflection automorphism of SO(3,3) as a $\Z2$ symmetry which forbids the appearance of a gravitational cosmological constant. Some temptative speculations are presented also for the possible inclusion of the matter contribution at a full quantum level.

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G. Bonelli, A. M. Boyarsky. 2000-08-18. Six Dimensional Topological Gravity and the Cosmological Constant Problem. https://doi.org/10.1016/s0370-2693(00)00985-0

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