Breather states in the Discrete Nonlinear Schrodinger Equation: dynamics and statistics

by Roberto Livi (Universita` di Firenze)

Tuesday 5 May 2020, 16:00 → 17:30 Europe/Rome

IL SEMINARIO VERRA' SVOLTO IN MODALITA' TELEMATICA.

Link per il collegamento: https://meet.google.com/pip-kvzt-fkz

We illustrate the peculiar properties of the Discrete Nonlinear Schrodinger Equation, where breather dynamics characterizes "negative temperature" states, which naturally appear also in out-of-equilibrium stationary conditions. In an equilibrium perspective these peculiar states are usually interpreted as an effect of ergodicity breaking: we discuss that they can be more properly understood in terms of inequivalence between statistical ensembles.