Renormalization-group flow of the dilaton potential

R. Floreanini, R. Percacci
1995 Physical Review D, Particles and fields  
We consider a scalar-metric gauge theory of gravity with independent metric, connection and dilaton. The role of the dilaton is to provide the scale of all masses, via its vacuum expectation value. In this theory, we study the renormalization group flow of the dilaton potential, taking into account threshold effects at the Planck scale. Due to the running of the VEV of the dilaton all particles that would naively seem to have masses larger than Planck's mass, may actually not propagate. This
more » ... propagate. This could solve the problem of unitarity in these theories.
doi:10.1103/physrevd.52.896 pmid:10019308 fatcat:xocffegstjbxdm256newzgfqwa