The nucleation in Ising ferromagnet has been studied by Monte Carlo simulation. Here, unlike the earlier studies, the magnetic field is spreading over the space in time. The nucleation time is observed to increase as compared to that in the case of static field. The clusters of negative spins...

The global economy is a complex dynamical system, whose cyclical fluctuations can mainly be characterized by simultaneous recessions or expansions of major economies. Thus, the researches on the synchronization phenomenon are key to understanding and controlling the dynamics of the global...

The magnetic systems with disorder form an important class of systems, which are under intensive studies, since they reflect real systems. Such a class of systems is the spin glass one, which combines randomness and frustration. The Sherrington–Kirkpatrick Ising spin glass with random...

The magnetic properties of a cylindrical Ising nanotube with a spin- 1/2 core surrounded by a spin- 3/2 shell system have been studied by means of the effective field theory (EFT). We have investigated the effects of crystal-field coupling at the surface shell and bilinear interactions among the...

Motivated by spintronic device applications, we engineer a superlattice model based on periodic tri-layers consisting of spins σ=12, S=1 and q=32 residing on the sites of a square lattice, interacting with an external magnetic field. We study its phase diagrams and magnetic properties. We...

In this paper, the effect of the social network on macroeconomic stability is examined using an agent-based, network-based DSGE (dynamic stochastic general equilibrium) model. While the authors' primitive (first-stage) examination has the network generation mechanism as its main focus, their...