Composite Gravitons from Metric-Independent Quantum Field Theories
Abstract
We review some recent work by Carone, Erlich and Vaman on composite gravitons in metric-independent quantum field theories, with the aim of clarifying a number of basic issues. Focusing on a theory of scalar fields presented previously in the literature, we clarify the meaning of the tunings required to obtain a massless graviton. We argue that this formulation can be interpreted as the massless limit of a theory of massive composite gravitons in which the graviton mass term is not of Pauli-Fierz form. We then suggest closely related theories that can be defined without such a limiting procedure (and hence without worry about possible ghosts). Finally, we comment on the importance of finding a compelling ultraviolet completion for models of this type, and discuss some possibilities.
Keywords
Cite
@article{arxiv.1911.13166,
title = {Composite Gravitons from Metric-Independent Quantum Field Theories},
author = {Christopher D. Carone},
journal= {arXiv preprint arXiv:1911.13166},
year = {2020}
}
Comments
17 pages LaTeX, 4 figures. Invited Brief Review for Modern Physics Letters A