Buongiorno, Martedi' 4 marzo Claudio Landim terra' un seminario al Dipartimento di Matematica (Sapienza, Roma). sotto trovate i dettagli. cordiali saluti alessandra faggionato Martedi' 4 Marzo, Aula C (Dip. Matematica, Univ. Sapienza), ore 14:30 Speaker: C. Landim (IMPA Rio De Janeiro, CNRS Rouen) Title: Zero-temperature limit of the Kawasaki dynamics for the Ising lattice gas in a large two-dimensional torus Abstract: We consider the Kawasaki dynamics at inverse temperature $\beta$ for the Ising lattice gas on a two-dimensional square of length $2L+1$ with periodic boundary conditions. We assume that initially the particles form a square of length $n$, which may increase, as well as $L$, with $\beta$. We show that in a proper time scale $L^2\, \theta_\beta$ particles form almost always a square and that this square evolves as a Brownian motion when the temperature vanishes. -- Prof. Alessandra Faggionato Department of Mathematics University La Sapienza Piazzale A. Moro, 2 00186 Rome - Italy