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Large-N phase transition in lattice 2-d principal chiral models
M. Campostrini, P. Rossi, E. Vicari
We investigate the large-N critical behavior of 2-d lattice chiral models by Monte Carlo simulations of U(N) and SU(N) groups at large N. Numerical results confirm strong coupling…
Strong coupling analysis of the large-N 2-d lattice chiral models
M. Campostrini, P. Rossi, E. Vicari
Two dimensional large-N chiral models on the square and honeycomb lattices are investigated by a strong coupling analysis. Strong coupling expansion turns out to be predictive for…
Running coupling constant and correlation length from Wilson loops
Massimo Campostrini, Paolo Rossi, Ettore Vicari
We consider a definition of the QCD running coupling constant related to Wilson loops of size with arbitrary fixed . The schemes defined by these couplings…
Asymptotic scaling from strong coupling in 2-d lattice chiral models
M. Campostrini, P. Rossi, E. Vicari
Two dimensional lattice chiral models are investigate by a strong coupling analysis. Strong coupling expansion turns out to be predictive for the evaluation of continuum…
Strong coupling expansion of chiral models
M. Campostrini, P. Rossi, E. Vicari
A general precedure is outlined for an algorithmic implementation of the strong coupling expansion of lattice chiral models on arbitrary lattices. A symbolic character expansion in…
Master Wilson loop operators in large-N lattice QCD
P. Rossi, E. Vicari
An explicit solution is found for the most general independent correlation functions in lattice QCD with Wilson action. The large- limit of these correlations may be used to…