Dresden 2009 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 6: Critical phenomena and phase transitions

DY 6.6: Vortrag

Montag, 23. März 2009, 16:00–16:15, ZEU 118

Monte-Carlo simulations of nucleation and phase transitions in small systems — •Manuel Schrader, Peter Virnau, and Kurt Binder — Institut für Physik, Johannes-Gutenberg-Universität Mainz, Staudingerweg 7, 55099 Mainz, Germany

Subcritical isotherms are obtained from grandcanonical Monte Carlo simulations of small systems inside the coexistence region. We observe sharp transitions from a homogeneous state to a droplet, a cylinder, and a slablike configuration with increasing density. The droplet phase is employed to investigate the free energy of a droplet as a function of its radius. Results agree well with a simple model derived from classical nucleation theory.