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High-order perturbative expansions of multi-parameter Phi^4 quantum field theories
Andrea Pelissetto, Ettore Vicari
We present high-order pertubative expansions of multi-parameter Phi^4 quantum field theories with an N-component fundamental field, containing up to 4th-order polynomials of the fi…
The uniformly frustrated two-dimensional XY model in the limit of weak frustration
Vincenzo Alba, Andrea Pelissetto, Ettore Vicari
We consider the two-dimensional uniformly frustrated XY model in the limit of small frustration, which is equivalent to an XY system, for instance a Josephson junction array, in a…
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…
Critical phenomena and renormalization-group flow of multi-parameter Φ^4 field theories
Ettore Vicari
In the framework of the renormalization-group (RG) approach, critical phenomena can be investigated by studying the RG flow of multi-parameter field theories with an -comp…
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…
Multicritical behavior of two-dimensional anisotropic antiferromagnets in a magnetic field
Andrea Pelissetto, Ettore Vicari
We study the phase diagram and multicritical behavior of anisotropic Heisenberg antiferromagnets on a square lattice in the presence of a magnetic field along the easy axis. We arg…
22nd order high-temperature expansion of nearest-neighbor models with O(2) symmetry on a simple cubic lattice
Massimo Campostrini, Martin Hasenbusch, Andrea Pelissetto +1
We present the high-temperature series for a nearest-neighbor model with O(2) symmetry on a simple cubic lattice with the most general single-site potential. In particular, the mag…