Implications of a Dilaton in Gauge Theory and Cosmology
نویسنده
چکیده
After a review of theoretical motivations to consider theories with direct couplings of scalar fields to Ricci and gauge curvature terms, we consider the dynamics and non–perturbative stabilization of a dilaton in three and in four dimensions. In particular, we derive generalized Coulomb potentials in the presence of a dilaton and discuss a low energy effective dilaton potential induced by instanton effects and the S–dual coupling to axions. We conclude with a discussion of cosmological implications of a light dilaton.
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