出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We study the validity of the large-N equivalence between four-dimensional SU(N) lattice gauge
theory and its momentum quenched version.the Quenched Eguchi-Kawai (QEK) model. We
have found strong evidence that this equivalence does not hold in the weak-coupling regime (and
thus in the continuum limit). This is based on weak-coupling analytic arguments and Monto-
Carlo simulations at intermediate couplings with 20 N 200. Since detailed expositions of
our arguments, methods and results have already appeared in Phys. Rev. D78:034507 (2008) and
arXiv:0807.1275, we attempt here to give a more intuitive explanation of our results. The breakdown
of reduction that we nd is due to a dynamically generated correlation between different
Euclidean components of the gauge elds.
