Axion-dilaton-modulus gravity theory of Brans-Dicke-type and conformal symmetry

Details Axion-dilaton-modulus gravity theory of Brans-Dicke-type and conformal symmetry Axion-dilaton-modulus gravity theory of Brans-Dicke-type and conformal symmetry

2000-10-18

arxiv.org/abs/hep-th/0010146v1

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, RevTex, no figures

Scientific paper

Conformal symmetry is investigated within the context of axion-dilaton-modulus theory of gravity of Brans-Dicke-type. A distinction is made between general conformal symmetry and invariance under transformations of the physical units. The conformal degree of symmetry of the theory is studied when quantum fermion (lepton) modes with electromagnetic interaction are considered. Based on the requirement of invariance of the physical laws under general transformations of the units of measure, arguments are given that point at a matter action with non-minimal coupling of the dilaton to the matter fields as the most viable description of the world within the context of the model studied. The geometrical implications of the results obtained are discussed.

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