Gravity, Equivalence Principle and Clocks
arXiv:gr-qc/9711060
Abstract
String theory suggests the existence of gravitational-strength scalar fields (``dilaton'' and ``moduli'') whose couplings to matter violate the equivalence principle. This provides a new motivation for high-precision clock experiments, as well as a generic theoretical framework for analyzing their significance.
9 pages, Latex, to appear in the Proceedings of the Workshop on the Scientific Applications of Clocks in Space (JPL, Pasadena, November 7-8, 1996)