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Implications of a Dilaton in Gauge Theory and Cosmology
Author(s) -
Dick Rainer
Publication year - 1997
Publication title -
fortschritte der physik/progress of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.2190450702
Subject(s) - dilaton , physics , instanton , axion , gauge theory , theoretical physics , coulomb , curvature , cosmology , scalar (mathematics) , gauge (firearms) , quantum electrodynamics , mathematical physics , particle physics , quantum mechanics , geometry , mathematics , dark matter , history , electron , archaeology
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.