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Padé approximation and glueball mass estimates in 3d and 4d with N_c = 2,3 colors

A Padé approximation approach, rooted in an infrared moment technique, is employed to provide mass estimates for various glueball states in pure gauge theories. The main input in this analysis are theoretically well-motivated fits to lattice gluon propagator data, which are by now available for both SU(2) and SU(3) in 3 and 4 space-time dimensions. We construct appropriate gauge invariant and Lorentz covariant operators in the (pseudo)scalar and (pseudo)tensor sector. Our estimates compare reasonably well with a variety of lattice sources directly aimed at extracting glueball masses.

preprint2014arXivOpen access
D. DudalM. S. GuimaraesS. P. Sorella
hep-phhep-lathep-th
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D. DudalM. S. GuimaraesS. P. Sorella

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