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Perturbation theory predictions and Monte Carlo simulations for the 2-d O(n) non-linear sigma-model
B. Alles, A. Buonanno, G. Cella
By using the results of a high-statistics (O(10^7) measurements) Monte Carlo simulation we test several predictions of perturbation theory on the O(n) non-linear sigma-model in 2 d…
Reply to A. Patrascioiu's and E. Seiler's comment on our paper "The two-phase issue in the O(n) non-linear sigma-model: a Monte Carlo study"
B. Alles, A. Buonanno, G. Cella
We reply to a comment by A. Patrascioiu and E. Seiler appeared in hep-lat/9608138 on our paper hep-lat/9608002.
Lattice energy-momentum tensor with Symanzik improved actions
A. Buonanno, G. Cella, G. Curci
We define the energy-momentum tensor on lattice for the and for the nonlinear -model Symanzik tree-improved actions, using Ward identities or an explicit matching procedu…
A Swendsen-Wang update algorithm for the Symanzik improved sigma model
A. Buonanno, G. Cella
We study a generalization of Swendsen-Wang algorithm suited for Potts models with next-next-neighborhood interactions. Using the embedding technique proposed by Wolff we test it on…