Six Dimensional Topological Gravity and the Cosmological Constant Problem

Details Six Dimensional Topological Gravity and the Cosmological Constant Problem Six Dimensional Topological Gravity and the Cosmological Constant Problem

2000-04-08

arxiv.org/abs/hep-th/0004058v3

Phys.Lett. B490 (2000) 147-153

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, Latex, one figure; one reference added; final version to appear in PLB

Scientific paper

10.1016/S0370-2693(00)00985-0

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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