1. Glueball-Like Screening Masses in Pure SU(3) at Finite Temperatures
- Author
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Grossman, B., Gupta, Sourendu, Heller, U. M., and Karsch, F.
- Subjects
High Energy Physics - Lattice ,High Energy Physics - Phenomenology ,Nuclear Theory - Abstract
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., Comment: 20 pages, LaTeX file, no figures or macros. HLRZ 61/93, BI-TP 93/49, FSU-SCRI-93-106
- Published
- 1993
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