Speaker
Francesco Caravelli
Description
We formulate coarse-grained dynamics and irreversibility from an observer-centered perspective within nonequilibrium statistical mechanics. Here, an observer is specified by a resolved subspace of observables, which determines the associated relevant ensemble, unresolved degrees of freedom, noise, and memory.
We analyze how different choices of observer modify the reduced dynamics and compare nested observers through an entropy hierarchy, and discuss fluctuation theorems within this approach.
