Spontaneous symmetry breaking without potential in a scalar-tensor theory of gravity

Scale invariance and internal symmetry in a new scalar-tensor theory of gravity are shown to break down spontaneously, without the employment of a potential in the lagrangian. When the symmetry becomes local, the intermediate bosons acquire masses of the order of the Planck mass, as expected. It appears that these results may also be of relevance to the missing-mass problem in cosmology. (orig.)