Conformal symmetry and the cosmological constant problem
arXiv:1804.00926 · doi:10.1142/S0218271818470144
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.
8 pages, this essay received an Honorable Mention in the 2018 Essay Competition of the Gravity Research Foundation, v2: references updated, matches published version