A Quantum Gravitational Relaxation of The Cosmological Constant
High Energy Physics - Theory
2009-11-11 v1 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
Similar to QCD, general relativity has a sector due to large diffeomorphisms. We make explicit, for the first time, that the gravitational CP violating parameter is non-perturbatively related to the cosmological constant. A gravitational pseudoscalar coupling to massive fermions gives rise to general relativity from a topological theory through a chiral symmetry breaking mechanism. We show that a gravitational Peccei-Quinn like mechanism can dynamically relax the cosmological constant.
Keywords
Cite
@article{arxiv.hep-th/0503146,
title = {A Quantum Gravitational Relaxation of The Cosmological Constant},
author = {Stephon Alexander},
journal= {arXiv preprint arXiv:hep-th/0503146},
year = {2009}
}
Comments
6 pages