Screening masses in quenched image Yang–Mills theory: Universality from dynamics? Original Research Article

We compute the spectrum of gluonic screening-masses in the image channel of quenched 3d Yang–Mills theory near the phase-transition. Our finite-temperature lattice simulations are performed at scaling region, using state-of-art techniques for thermalization and spectroscopy, which allows for thorough data extrapolations to thermodynamic limit. Ratios among mass-excitations with the same quantum numbers on the gauge theory, 2d Ising and image models are compared, resulting in a nice agreement with predictions from universality. In addition, a gauge-to-scalar mapping, previously employed to fit QCD Greenʹs functions at deep IR, is verified to dynamically describe these universal spectroscopic patterns.