Holographic light dilaton at the conformal edge
High Energy Physics - Phenomenology
2023-06-22 v2 High Energy Physics - Theory
Abstract
We study a simple holographic model for gauge theories near the conformal edge to show that the dilaton can be parametrically lighter than any other composite states. The masses of all composite states, except the Nambu-Goldstone bosons like dilaton, are bounded by the infrared scale or the dynamical mass. The parametric dependence of the dilaton mass is controlled by the closeness of the anomalous dimension of the quark bilinear, that breaks spontaneously the scale symmetry, to the conformality. We also show in the holographic dual that under certain assumptions, the dilaton saturates at low energy the anomalous Ward identity for the dilatation currents.
Cite
@article{arxiv.2302.08112,
title = {Holographic light dilaton at the conformal edge},
author = {Jesús Cruz Rojas and Deog Ki Hong and Sang Hui Im and Matti Järvinen},
journal= {arXiv preprint arXiv:2302.08112},
year = {2023}
}
Comments
8 pages, v2: references updated, some discussions refined, conclusions unchanged