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math.PR2026
Nonlinear fluctuations for a chain of weakly anharmonic oscillators with stochastic perturbation
Kohei Hayashi, Stefano Olla
We study the fluctuations of the phonon modes in a one-dimensional chain of anharmonic oscillators where the deterministic Hamiltonian dynamics is perturbed by random exchanges of…
math.PR2025
Multitime fields and hard rod scaling limits
Pablo A. Ferrari, Stefano Olla
A Poisson line process is a random set of straight lines contained in the plane, as the image of the map , for each point of a Poisson…
math.PR2025
Heat flow in a periodically forced, unpinned thermostatted chain
Tomasz Komorowski, Stefano Olla, Marielle Simon
We prove the hydrodynamic limit for a one-dimensional harmonic chain of interacting atoms with a random flip of the momentum sign. The system is open: at the left boundary it is at…