| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9860723 | Physics Letters B | 2005 | 7 Pages |
Abstract
Similar to QCD, general relativity has a Î sector due to large diffeomorphisms. We make explicit, for the first time, that the gravitational CP violating Î parameter is nonperturbatively related to the cosmological constant. A gravitational pseudoscalar coupling to massive fermions gives rise to general relativity from a topological Bâ§F theory through a chiral symmetry breaking mechanism. We show that a gravitational Peccei-Quinn like mechanism can dynamically relax the cosmological constant.
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Authors
Stephon Alexander,