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Weyl scalings and spinor matter interactions in scalar-tensor theories of gravitation

Research output: Contribution to Journal/MagazineJournal articlepeer-review

<mark>Journal publication date</mark>1/04/1982
<mark>Journal</mark>Physics Letters B
Issue number3-4
Number of pages5
Pages (from-to)206-210
Publication StatusPublished
<mark>Original language</mark>English


An SL(2,C) gauge formulation of a scalar-tensor theory of gravitation is related to the Brans-Dicke theory in the absence of spinorial matter couplings although the natural connection of space-time has a torsion determined by the scalar field. Simplified scaling properties of gravitational variables are elucidated in this geometry. In the presence of matter with intrinsic spin a natural scalar-spinor coupling is exposed. A locally scale invariant limit exists without a Weyl gauge field.