title: Re/Os constraint on the time variability of the fine-structure constant.
abstract: We argue that the accuracy by which the isochron parameters of the decay 187Re-->187Os are determined by dating iron meteorites may constrain the possible time dependence of the decay rate and hence of the fine-structure constant alpha, not directly but only in a model-dependent manner. From this point of view, some of the attempts to analyze the Oklo constraint and the results of the quasistellar-object absorption lines are reexamined.
authors.affiliation: Advanced Research Institute for Science and Engineering, Waseda University, Tokyo, 169-8555 Japan.
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Fujii
authors.forename: Akira
authors.initials: A
authors.lastname: Iwamoto