Abstract
We connect a possible solution for the “cosmological constant problem” to the existence of a (postulated) conformal fixed point in a fundamental theory. The resulting cosmology leads to quintessence, where the present acceleration of the expansion of the universe is linked to a crossover in the flow of coupling constants.
- Received 22 October 2002
DOI:https://doi.org/10.1103/PhysRevLett.90.231302
©2003 American Physical Society
