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DY: Dynamik und Statistische Physik
DY 34: Poster
DY 34.108: Poster
Monday, March 7, 2005, 15:30–18:00, Poster TU D
Phase-Ordering and Aging Phenomena in Potts Models — •Eric Lorenz and Wolfhard Janke — Institut für Theoretische Physik, Universität Leipzig, Augustusplatz 10/11, 04109 Leipzig, Germany
Dynamical properties of Potts models with q=2 and q=3 are studied during phase-ordering through numerical simulations with a nonconserved order parameter. The systems are quenched from a highly disordered state into the ferromagnetic phase (T<Tc) whereafter the dynamical self-similarity of phase-ordering shows up. To reveal this aging phenomenon two-time quantities such as the autocorrelation A(t,s), autoresponse R(t,s) and spatiotemporal response R(t,s,r) are measured and compared with scaling functions predicted from local scale invariance.