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Field-theory results for three-dimensional transitions with complex symmetries
Pasquale Calabrese, Andrea Pelissetto, Paolo Rossi +1
We discuss several examples of three-dimensional critical phenomena that can be described by Landau-Ginzburg-Wilson theories. We present an overview of field-theoretical resu…
Multicritical phenomena in O(n_1)+O(n_2)-symmetric theories
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
We study the multicritical behavior arising from the competition of two distinct types of ordering characterized by O(n) symmetries. For this purpose, we consider the renormalizati…
Critical behavior of vector models with cubic symmetry
P. Calabrese, A. Pelissetto, E. Vicari
We report on some results concerning the effects of cubic anisotropy and quenched uncorrelated impurities on multicomponent spin models. The analysis of the six-loop three-dimensio…
Theta dependence of SU(N) gauge theories
Luigi Del Debbio, Haralambos Panagopoulos, Ettore Vicari
We study the dependence of four-dimensional SU() gauge theories, for and in the large-N limit. We use numerical simulations of the Wilson lattice formulation of ga…
Comment on ``Bicritical and Tetracritical Phenomena and Scaling Properties of the SO(5) Theory,'' [X. Hu, Phys. Rev. Lett. 87, 057004 (2001)]
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
We show that, in the most general -component theory with symmetry O(n_1)+O(n_2), N=n_1+n_2\geq 3, the O(N)-symmetric fixed point has (at least) three unstable directions: the te…
Critical structure factor in Ising systems
Victor Martin-Mayor, Andrea Pelissetto, Ettore Vicari
We perform a large-scale Monte Carlo simulation of the three-dimensional Ising model on simple cubic lattices of size L^3 with L=128 and 256. We determine the corresponding structu…