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.
Six-dimensional topological gravity and the cosmological constant problem / Bonelli, G.; Boyarsky, A. M.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 490:1-2(2000), pp. 147-153. [10.1016/S0370-2693(00)00985-0]
Six-dimensional topological gravity and the cosmological constant problem
Bonelli, G.;
2000-01-01
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.| File | Dimensione | Formato | |
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