title: Time-varying alpha and particle physics.
abstract: We argue that models in which an observable variation of the fine structure constant is explained by motion of a cosmic scalar field are not stable under renormalization and require massive fine-tuning that cannot be explained by any known mechanism.
authors.affiliation: Department of Physics and Astronomy, Rutgers University NHETC, Piscataway, New York, USA. banks@physics.rutgers.edu
authors.forename: Tom
authors.initials: T
authors.lastname: Banks
authors.forename: Michael
authors.initials: M
authors.lastname: Dine
authors.forename: Michael
authors.initials: M
authors.lastname: Douglas