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Ferromagnetic-glassy transitions in three-dimensional Ising spin glasses
Giacomo Ceccarelli, Andrea Pelissetto, Ettore Vicari
We investigate the ferromagnetic-glassy transitions which separate the low-temperature ferromagnetic and spin-glass phases in the temperature-disorder phase diagram of three-dimens…
Finite-size scaling in two-dimensional Ising spin glass models
Francesco Parisen Toldin, Andrea Pelissetto, Ettore Vicari
We study the finite-size behavior of two-dimensional spin-glass models. We consider the +-J model for two different values of the probability of the antiferromagnetic bonds and the…
The three-dimensional gauge-glass model
Vincenzo Alba, Ettore Vicari
We investigate the temperature-disorder (T-S) phase diagram of a three-dimensional gauge glass model, which is a cubic-lattice nearest-neighbor XY model with quenched random phase…
Universality of the glassy transitions in the two-dimensional +- J Ising model
Francesco Parisen Toldin, Andrea Pelissetto, Ettore Vicari
We investigate the zero-temperature glassy transitions in the square-lattice +- J Ising model, with bond distribution ; p=1 and p…
Quasi-long-range order in the 2D XY model with random phase shifts
Vincenzo Alba, Andrea Pelissetto, Ettore Vicari
We study the square-lattice XY model in the presence of random phase shifts. We consider two different disorder distributions with zero average shift and investigate the low-temper…
Strong-disorder paramagnetic-ferromagnetic fixed point in the square-lattice +- J Ising model
F. Parisen Toldin, A. Pelissetto, E. Vicari
We consider the random-bond +- J Ising model on a square lattice as a function of the temperature T and of the disorder parameter p (p=1 corresponds to the pure Ising model). We in…
Critical and multicritical behavior of the +- J Ising model in two and three dimensions
Martin Hasenbusch, Francesco Parisen Toldin, Andrea Pelissetto +1
We report our Monte Carlo results on the critical and multicritical behavior of the +- J Ising model [with a random-exchange probability P(J_{xy}) = p δ(J_{xy} - J) + (1-p) δ(J_{xy…
The critical behavior of three-dimensional Ising spin glass models
Martin Hasenbusch, Andrea Pelissetto, Ettore Vicari
We perform high-statistics Monte Carlo simulations of three-dimensional Ising spin-glass models on cubic lattices of size L: the +- J (Edwards-Anderson) Ising model for two values…
Universal dependence on disorder of 2D randomly diluted and random-bond +-J Ising models
M. Hasenbusch, F. Parisen Toldin, A. Pelissetto +1
We consider the two-dimensional randomly site diluted Ising model and the random-bond +-J Ising model (also called Edwards-Anderson model), and study their critical behavior at the…
Multicritical Nishimori point in the phase diagram of the +- J Ising model on a square lattice
Martin Hasenbusch, Francesco Parisen Toldin, Andrea Pelissetto +1
We investigate the critical behavior of the random-bond +- J Ising model on a square lattice at the multicritical Nishimori point in the T-p phase diagram, where T is the temperatu…
Static and dynamic structure factors in three-dimensional randomly diluted Ising models
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
We consider the three-dimensional randomly diluted Ising model and study the critical behavior of the static and dynamic spin-spin correlation functions (static and dynamic structu…
The critical behavior of 3D Ising glass models: universality and scaling corrections
M. Hasenbusch, A. Pelissetto, E. Vicari
We perform high-statistics Monte Carlo simulations of three three-dimensional Ising spin-glass models: the +-J Ising model for two values of the disorder parameter p, p=1/2 and p=0…
Relaxational dynamics in 3D randomly diluted Ising models
Martin Hasenbusch, Andrea Pelissetto, Ettore Vicari
We study the purely relaxational dynamics (model A) at criticality in three-dimensional disordered Ising systems whose static critical behaviour belongs to the randomly diluted Isi…
Magnetic-glassy multicritical behavior of the three-dimensional +- J Ising model
M. Hasenbusch, F. Parisen Toldin, A. Pelissetto +1
We consider the three-dimensional model defined on a simple cubic lattice and study its behavior close to the multicritical Nishimori point where the paramagnetic-ferromagn…
Zero-temperature behavior of the random-anisotropy model in the strong-anisotropy limit
Frauke Liers, Jovanka Lukic, Enzo Marinari +2
We consider the random-anisotropy model on the square and on the cubic lattice in the strong-anisotropy limit. We compute exact ground-state configurations, and we use them to dete…
The 3D +-J Ising model at the ferromagnetic transition line
Martin Hasenbusch, Francesco Parisen Toldin, Andrea Pelissetto +1
We study the critical behavior of the three-dimensional Ising model [with a random-exchange probability ] at the transiti…
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 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…