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Phase separation in systems with absorbing states
M. A. Munoz, U. Marini Bettolo Marconi, R. Cafiero
We study the problem of phase separation in systems with a positive definite order parameter, and in particular, in systems with absorbing states. Owing to the presence of a single…
Critical properties of Ising model on Sierpinski fractals. A finite size scaling analysis approach
J. M. Carmona, U. Marini Bettolo Marconi, J. J. Ruiz-Lorenzo +1
The present paper focuses on the order-disorder transition of an Ising model on a self-similar lattice. We present a detailed numerical study, based on the Monte Carlo method in co…
A Soluble Phase Field Model
Umberto Marini Bettolo Marconi, Andrea Crisanti, Giulia Iori
The kinetics of an initially undercooled solid-liquid melt is studied by means of a generalized Phase Field model, which describes the dynamics of an ordering non-conserved field p…
Growth in systems of vesicles and membranes
A. M. Somoza, U. Marini Bettolo Marconi, P. Tarazona
We present a theoretical study for the intermediate stages of the growth of membranes and vesicles in supersaturated solutions of amphiphilic molecules. The problem presents import…
Growth Kinetics in a Phase Field Model with Continuous Symmetry
U. Marini Bettolo Marconi, A. Crisanti
We discuss the static and kinetic properties of a Ginzburg-Landau spherically symmetric model recently introduced (Phys. Rev. Lett. {\bf 75}, 2176, (1995)) in order to gener…
Diffusion Limited Growth in Systems with Continuous Symmetry
U. Marini Bettolo Marconi, A. Crisanti
To study the effect of slow heat conduction during phase separation, we discuss the relaxation properties of an symmetric model with Phase field type dynamics, where a non c…