Department Mathematik



Mathematisches Kolloquium

Am Freitag, 17. Juli 2009, um 16 Uhr c.t. spricht

Prof. Dr. Errico Presutti
(University of Rom "Tor Vergata")

im Hörsaal A027 über das Thema

Stationary non equilibrium states: from microscopic to macroscopic descriptions

Zusammenfassung: In the presence of external driving forces a system may reach a final state which is not in thermodynamic equilibrium and where non zero currents flow. Many attempts have been done to characterize such states, maybe with the goal of extending the Gibbs theory of equilibrium statistical mechanics to a non equilibrium context, unfortunately the goal is far from being reached but many interesting results have been obtained. I will discuss only a few aspects in the case of heat flow driven by thermal gradients. The microscopic nature of thermal reservoirs and the equivalence between particle models with and without Gaussian thermostatic forces will be discussed first. Then after recalling the derivation of the Fourier law in some stochastic particle systems I will present recent results I have on systems with Kac potentials in a regime where phase transitions are present.
Alle Interessierten sind hiermit herzlich eingeladen. Eine halbe Stunde vor dem Vortrag gibt es Kaffee und Tee im Sozialraum (Raum 448) im 4. Stock.
Treffpunkt zum Abendessen um 19:00 Uhr im Restaurant Alter Hof.