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The normal-to-planar superfluid transition in Helium 3
Martino De Prato, Andrea Pelissetto, Ettore Vicari
We study the nature of the Helium-3 superfluid transition from the normal to the planar phase, which is expected to be stabilized by the dipolar interactions. We determine the RG f…
Spin models with random anisotropy and reflection symmetry
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
We study the critical behavior of a general class of cubic-symmetric spin systems in which disorder preserves the reflection symmetry , for . Th…
The three-dimensional randomly dilute Ising model: Monte Carlo results
P. Calabrese, V. Martin-Mayor, A. Pelissetto +1
We perform a high-statistics simulation of the three-dimensional randomly dilute Ising model on cubic lattices with . We choose a particular value of the density, x…
Crossover behavior in three-dimensional dilute spin systems
Pasquale Calabrese, Pietro Parruccini, Andrea Pelissetto +1
We study the crossover behaviors that can be observed in the high-temperature phase of three-dimensional dilute spin systems, using a field-theoretical approach. In particular, for…
The critical behavior of magnetic systems described by Landau-Ginzburg-Wilson field theories
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
We discuss the critical behavior of several three-dimensional magnetic systems, such as pure and randomly dilute (anti)ferromagnets and stacked triangular antiferromagnets. We also…
Critical equation of state of randomly dilute Ising systems
P. Calabrese, M. De Prato, A. Pelissetto +1
We determine the critical equation of state of three-dimensional randomly dilute Ising systems, i.e. of the random-exchange Ising universality class. We first consider the small-ma…
Crossover from random-exchange to random-field critical behavior in Ising models
Pasquale Calabrese, Andrea Pelissetto, Ettore Vicari
We compute the crossover exponent describing the crossover from the random-exchange to the random-field critical behavior in Ising systems. For this purpose, we consider the fi…
Third-harmonic exponent in three-dimensional N-vector models
Martino De Prato, Andrea Pelissetto, Ettore Vicari
We compute the crossover exponent associated with the spin-3 operator in three-dimensional O(N) models. A six-loop field-theoretical calculation in the fixed-dimension approach giv…
Dynamic structure factor of the Ising model with purely relaxational dynamics
P. Calabrese, V. Martin-Mayor, A. Pelissetto +1
We compute the dynamic structure factor for the Ising model with a purely relaxational dynamics (model A). We perform a perturbative calculation in the expansion, at two loops…