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Fixed point stability and decay of correlations
Ettore Vicari, Jean Zinn-Justin
In the framework of the renormalization-group theory of critical phenomena, a quantitative description of many continuous phase transitions can be obtained by considering an effect…
Universality class of 3D site-diluted and bond-diluted Ising systems
Martin Hasenbusch, Francesco Parisen Toldin, Andrea Pelissetto +1
We present a finite-size scaling analysis of high-statistics Monte Carlo simulations of the three-dimensional randomly site-diluted and bond-diluted Ising model. The critical behav…
The spectrum of SU(N) gauge theories at nonzero theta
Luigi Del Debbio, Gian Mario Manca, Haralambos Panagopoulos +2
We study the theta dependence of the spectrum of four-dimensional SU(N) gauge theories, where theta is the coefficient of the topological term in the Lagrangian, for N>=3 and in th…
Comment on "Spurious fixed points in frustrated magnets," cond-mat/0609285
Andrea Pelissetto, Ettore Vicari
We critically discuss the arguments reported in cond-mat/0609285 by B. Delamotte, Yu. Holovatch, D. Ivaneyko, D. Mouhanna, and M. Tissier. We show that their conclusions are not th…
The random-anisotropy model in the strong-anisotropy limit
Francesco Parisen Toldin, Andrea Pelissetto, Ettore Vicari
We investigate the nature of the critical behaviour of the random-anisotropy Heisenberg model (RAM), which describes a magnetic system with random uniaxial single-site anisotropy,…
Critical behavior of the random-anisotropy model in the strong-anisotropy limit
Francesco Parisen Toldin, Andrea Pelissetto, Ettore Vicari
We investigate the nature of the critical behavior of the random-anisotropy Heisenberg model (RAM), which describes a magnetic system with random uniaxial single-site anisotropy, s…