Conformal symmetry and the cosmological constant problem
General Relativity and Quantum Cosmology
2018-10-23 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We argue that, when a theory of gravity and matter is endowed with (classical) conformal symmetry, the fine tuning required to obtain the cosmological constant at its observed value can be significantly reduced. Once tuned, the cosmological constant is stable under a change of the scale at which it is measured.
Cite
@article{arxiv.1804.00926,
title = {Conformal symmetry and the cosmological constant problem},
author = {Stefano Lucat and Tomislav Prokopec and Bogumila Swiezewska},
journal= {arXiv preprint arXiv:1804.00926},
year = {2018}
}
Comments
8 pages, this essay received an Honorable Mention in the 2018 Essay Competition of the Gravity Research Foundation, v2: references updated, matches published version