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- W3103187195 abstract "We study heat transport in a chain of harmonic oscillators with random elastic collisions between nearest-neighbours. The equations of motion of the covariance matrix are numerically solved for free and fixed boundary conditions. In the thermodynamic limit, the shape of the temperature profile and the value of the stationary heat flux depend on the choice of boundary conditions. For free boundary conditions, they also depend on the coupling strength with the heat baths. Moreover, we find a strong violation of local equilibrium at the chain edges that determine two boundary layers of size $sqrt{N}$ (where $N$ is the chain length), that are characterized by a different scaling behaviour from the bulk. Finally, we investigate the relaxation towards the stationary state, finding two long time scales: the first corresponds to the relaxation of the hydrodynamic modes; the second is a manifestation of the finiteness of the system." @default.
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- W3103187195 date "2010-03-16" @default.
- W3103187195 modified "2023-10-18" @default.
- W3103187195 title "Nonequilibrium dynamics of a stochastic model of anomalous heat transport: numerical analysis" @default.
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- W3103187195 doi "https://doi.org/10.1088/1751-8113/43/14/145001" @default.
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