Screening masses in quenched (2+1)d Yang-Mills theory: universality from dynamics?

Details Screening masses in quenched (2+1)d Yang-Mills theory: universality from dynamics? Screening masses in quenched (2+1)d Yang-Mills theory: universality from dynamics?

2009-12-15

arxiv.org/abs/0912.2871v2

Nuclear Physics B, Volume 833, Issues 1-2, 1 July 2010, Pages 17-27

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, 4 eps figures. Revised version, to appear in Nucl. Phys. B

Scientific paper

10.1016/j.nuclphysb.2010.02.021

We compute the spectrum of gluonic screening-masses in the $0^{++}$ 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 $\lambda\phi^{4}$ 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

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