Time-Varying Fine-Structure Constant Requires Cosmological Constant
Abstract
Description
Webb et al. presented preliminary evidence for a time-varying fine-structure constant. We show Teller's formula for this variation to be ruled out within the Einstein-de Sitter universe, however, it is compatible with cosmologies which require a large cosmological constant.
3 pages, no figures, revtex, to be published in Mod. Phys. Lett. A
3 pages, no figures, revtex, to be published in Mod. Phys. Lett. A