Light scalar spectrum in extra-dimensional gauge theories
Abstract
The phase diagram of five-dimensional SU(2) gauge theories with one compactified dimension on anisotropic lattices has a rich structure. In this contribution we show how to control non-perturbatively the scale hierarchy between the cut-off and the compactification scale in the bare parameter space. There exists a set of strong bare couplings where the the five-dimensional lattice theory can be described by an effective four-dimensional theory with a scalar field in the adjoint representation. We present a detailed study of the light scalar spectrum as it arises from the non-perturbative dynamics of the full five-dimensional lattice theory. We also investigate the mixing with scalar glueball states in the attempt to further establish the extra-dimensional nature of light scalar states.
Keywords
Cite
@article{arxiv.1211.0797,
title = {Light scalar spectrum in extra-dimensional gauge theories},
author = {Enrico Rinaldi and Luigi Del Debbio and Alistair Hart},
journal= {arXiv preprint arXiv:1211.0797},
year = {2013}
}
Comments
7 pages, 4 figures. To appear in the proceedings of the 30th International Symposium on Lattice Field Theory, June 24-29 2012