A unitary renormalizable model of composite gravitons
High Energy Physics - Theory
2021-01-08 v1 General Relativity and Quantum Cosmology
High Energy Physics - Lattice
Abstract
A four-dimensional confining Yang-Mills field, coupled to a fundamental fermion field and a bi-fundamental scalar field, has excitations with spin-2, but no other quantum numbers. These spin-2 excitations can be light or can condense, depending upon the scalar coupling. If condensation occurs, there is a massless spin-2 Goldstone boson with (possibly weakly) broken Lorentz invariance in the effective theory. The low-lying spectrum contains additional spin-0 and spin-1 particles. We discuss how to couple these new fields to other matter fields. To our knowledge, this is the only explicit proposal for a unitary and perturbatively-renormalizable local field theory of gravity.
Cite
@article{arxiv.2101.02236,
title = {A unitary renormalizable model of composite gravitons},
author = {Peter Orland},
journal= {arXiv preprint arXiv:2101.02236},
year = {2021}
}
Comments
6 pages, including figures on last page