Document Type
Article
Publication Date
2-5-2016
Abstract
We developed a “brute-force” simulation method and conducted numerical “experiments” on homogeneous nucleation in an isotropic system at large driving forces (not small supersaturations) using the stochastic Ginzburg-Landau approach. Interactions in the system are described by the asymmetric (no external field), athermal (temperature-independent driving force), tangential (simple phase diagram) Hamiltonian, which has two independent “drivers” of the phase transition: supersaturation and thermal noise. We obtained the probability distribution function of the lifetime of the metastable state and analyzed its mean value as a function of the supersaturation, noise strength, and volume. We also proved the nucleation theorem in the mean-field approximation. The results allowed us to find the thermodynamic properties of the barrier state and conclude that at large driving forces the fluctuating volumes are not independent.
Recommended Citation
Umantsev, Alexander, "Lifetime of metastable states in a Ginzburg-Landau system: Numerical simulations at large driving forces" (2016). College of Health, Science, and Technology. 1186.
https://digitalcommons.uncfsu.edu/college_health_science_technology/1186