Kinetics of the First-Order Phase Transition.

Simple model of first-order phase transition

One-dimensional model of a system where first-order phase transition occurs is examined in the present paper. It is shown that basic properties of the phenomenon, such as a well defined temperature of transition, are caused both by existence of a border between the phases and the fact that only in the vicinity of that border it is possible for molecules to change their phase. Not only the model...

Ball Solitons in Kinetics of the First Order Magnetic Phase Transition

Landau Theory in Kinetics of the CuAu First-Order Phase Transition

The study of kinetics of the order-disorder phase transition in CuAu is performed in the framework of the time-dependent Ginzburg-Landau theory. The analytical solution for the motion parameters of the interphase boundary is applied to the calculations of width and velocity at different overheating and overcooling temperatures. We propose a way of verification of validity of the mean-field appr...

First-order nonthermal phase transition after preheating

During preheating after inflation, parametric resonance rapidly generates very large fluctuations of scalar fields. In models where the inflaton field φ oscillates in a double-well potential and interacts with another scalar field X, fluctuations of X can keep the φ→ −φ symmetry temporarily restored. If the coupling of φ to X is much stronger than the inflaton self-coupling, the subsequent symm...

Kinetics of a First-Order Phase Transition: Computer Simulations and Theory

We make a quantitative comparison between the predictions of the BeckerDgring equations and computer simulations on a model of a quenched binary A-B alloy. The atoms are confined to the vertices of a simple cubic lattice, interact through attractive nearest neighbor interactions, and move by interchanges of nearest neighbor pairs (Kawasaki dynamics). We study in particular the time evolution of...