TY - JOUR
T1 - Light scalar spectrum in extra-dimensional gauge theories
AU - Rinaldi, Enrico
AU - Del Debbio, Luigi
AU - Hart, Alistair
N1 - 7 pages, 4 figures. To appear in the proceedings of the 30th International Symposium on Lattice Field Theory, June 24-29 2012
PY - 2012/11/5
Y1 - 2012/11/5
N2 - 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.
AB - 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.
KW - hep-lat
KW - hep-ph
M3 - Article
VL - 2012
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
IS - Lattice 2012
M1 - 038
ER -