Spectral reconstruction in SU(4) gauge theory with fermions in multiple representations

2021/12/02 by Luigi Del Debbio, Del Debbio, Luigi, Alessandro Lupo +5 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2112.01158

openalex publication_date 2021/12/02 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28

Abstract

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.

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