Light-front holographic QCD and emerging confinement

摘要: Abstract In this report we explore the remarkable connections between light-front dynamics, its holographic mapping to gravity in a higher-dimensional anti-de Sitter (AdS) space, and conformal quantum mechanics. This approach provides new insights into origin of fundamental mass scale physics underlying confinement dynamics QCD limit massless quarks. The result is relativistic wave equation for arbitrary spin with an effective potential derived from action embedding AdS space. allows computation essential features hadron spectra terms single scale. methods described here give precise interpretation variables quantities space numbers. leads relation functions boost-invariant describing internal structure hadronic bound-states physical space–time. pion chiral excitation light-quark meson baryon bound states lie on linear Regge trajectories identical slopes radial orbital currents are expressed as infinite sum poles, form factors product poles. At large q 2 factor incorporates correct power-law fall-off hard scattering independent specific dictated by twist. low vector dominance. also extended include small quark masses. We briefly review other approaches QCD, particular top-down bottom-up models based symmetry breaking. discussion open problems future applications.