Screening masses in quenched (2+1)d Yang-Mills theory: universality from dynamics?
arXiv:0912.2871 · doi:10.1016/j.nuclphysb.2010.02.021
Abstract
We compute the spectrum of gluonic screening-masses in the 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 models are compared, resulting in a nice agreement with predictions from universality. In addition, a gauge-to-scalar mapping, previously employed to fit QCD Green's functions at deep IR, is verified to dynamically describe these universal spectroscopic patterns
15 pages, 4 eps figures. Revised version, to appear in Nucl. Phys. B
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