出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：I present a study of the equation of state in quenched QCD, discussing some systematic effects related
to the lattice geometry. In particular, I comment on the modification of the Stefan-Boltzmann
law for a gas of free gluons in a finite system, and study the impact it might have on numerical
results at high temperatures, for the typical parameters of current lattice simulations. Finally, I
apply the results of this study to the analysis of data obtained from simulations of SU(N) gauge
theories with N > 3 colors, in a temperature range up to 3Tc, where infrared effects appear to be
under control. Preliminary results for various thermodynamic observables for SU(4), SU(5) and
SU(6) gauge theories are found to be close to each other and to those for SU(3), in agreement
with other similar studies. This may be relevant for the theoretical description of the QCD plasma.
