Particle spectra of gravity based on internal symmetry of quantum fields

Abstract

We examine the weak-field, zero-coupling limit of Yang--Mills gravity as recently formulated by Partanen and Tulkki, viewed as a free quantum field theory. In this approximation the theory has a ghostly teleparallel vacuum. We suggest that bimetric, vacuum expectation value, or finite-coupling extensions should be investigated.

3 pages, 1 figure