出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The random percolation model can be viewed as the dual of a well defined confining gauge theory;
since this theory, having no Monte Carlo dynamics at all, is simple to simulate, it is possible to
study the properties of the flux tube with very high precision; we show it can be described by
the effective string picture. Our results are lattice regularisation independent, therefore they are
well defined also in the continuum limit, and, for the first time in a gauge theory, it has been
possible to determine the next-to-leading quantum corrections throughout the computation of the
T6 coefficient of the Taylor expansion of s (T). Furthermore, this coefficient results to be related
to the universal ratio Tc/√s0.
