Glueball-Like Screening Masses in Pure SU(3) at Finite Temperatures

Details Glueball-Like Screening Masses in Pure SU(3) at Finite Temperatures Glueball-Like Screening Masses in Pure SU(3) at Finite Temperatures

1993-09-14

arxiv.org/abs/hep-lat/9309007v1

Nucl.Phys. B417 (1994) 289-306

Physics

High Energy Physics

High Energy Physics - Lattice

20 pages, LaTeX file, no figures or macros. HLRZ 61/93, BI-TP 93/49, FSU-SCRI-93-106

Scientific paper

10.1016/0550-3213(94)90548-7

We investigate the finite-temperature excitation spectrum in the gluon sector of $SU(3)$ pure gauge theory through measurements of screening masses in correlations of loop operators. We develop the classification of such operators under the symmetry group of the `$z$-slice'. In the confined phase of the theory, we find that the spectrum dynamically realises the zero temperature symmetries. We observe a large thermal shift of the $0^{++}$ glueball mass. In the deconfined phase, the spectrum distinguishes between operators coupling to electrically and magnetically polarised gluon fields. The former yields a screening mass equal to the Wilson-line screening mass; the latter, a method for the measurement of the magnetic mass in the high-temperature limit.

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