Seminars & Colloquia Calendar
Diffusive Fluctuations in Hard Rods Systems and other integrable dynamics
Stefano Olla - Université Paris-Dauphine-PSL and GSSI-L'Aquila
Location: Hill Center Room 705
Date & time: Thursday, 03 November 2022 at 12:00AM - 1:00PM
Abstract: We investigate the macroscopic behaviour of the density fluctuations of a one dimensional dynamics of hard rods with random length. After recentering on the effective velocity (hyperbolic space-time scaling) the density fluctuations of particles of a given velocity v will evolve on the diffusive scaling driven by a browian motion with a diffusivity depending on v. This rigid evolution of fluctuations is expected in other completely integrable systems (Box-Ball, Toda Lattice,..), in contrast with the behavior expected in chaotic dynamics.
Joint work with Pablo Ferrari (U. Buenos Aires).