Eventi del

30 2022 12:30 - 13:45
Stanza 3-E4-SR03 (Rontgen) / Zoom

Mark Peletier: How GENERIC arises from upscaling a Hamiltonian system

MARK PELETIER - Eindhoven University of Technology

Abstract:

 

In this talk, on joint work with Alexander Mielke and Johannes Zimmer, I want to explain our recent insights in how irreversibility arises out of coarse-graining reversible systems. In this context, 'irreversibility' means a system in GENERIC form, and 'reversible system' is a Hamiltonian system. The big question is how and why entropy and the Onsager operator appear.

The mathematical version of this question consists of taking a Hamiltonian system, doing some 'coarse-graining' (I will explain this) and then proving that, miraculously, the irreversible parts of GENERIC appear. We study a particular example, in which many calculations can be done by hand, and in which one can trace the origins of entropy and the Onsager operator back to the Hamiltonian system.

 

Per ulteriori informazioni  o per ricevere il link Zoom dell'evento, per favore scrivere a: elisur.magrini@unibocconi.it