The naturalness problem in the Higgs sector finds a popular solution in composite Higgs models. In such theories the Higgs boson emerges as the pseudo-Nambu-Goldstone boson associated with the breaking of a global symmetry realised in a new, strongly interacting sector. We address a model arising in this context, a SU(4) gauge theory with fermions in two distinct representations. We present a novel lattice study of this theory, in which we address the non-perturbative reconstruction of spectral densities from lattice correlators.
@article{arxiv.2112.01158,
title = {Spectral reconstruction in SU(4) gauge theory with fermions in multiple representations},
author = {Luigi Del Debbio and Alessandro Lupo and Marco Panero and Nazario Tantalo},
journal= {arXiv preprint arXiv:2112.01158},
year = {2021}
}