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- W4384789980 abstract "We study transport in a one-dimensional lattice system with two conserved quantities - “volume” and energy. Considering a slowly evolving local equilibrium state that is slightly deviated from an underlying global equilibrium, we estimate the correction to the local equilibrium distribution. This correction arises mainly through the space-time correlations of some local currents. In the continuum limit, we show that the local equilibrium distribution along with the correction yields drift-diffusion equation for the “volume” and super-diffusion equation for the energy in the linear response regime as macroscopic hydrodynamics as one would obtain from non-linear fluctuating hydrodynamic theory. We find explicit expression of the super-diffusion equation. Further, we find diffusive correction to the super-diffusive evolution. Such a correction allows us to study a crossover from diffusive to anomalous transport. We demonstrate this crossover numerically through the spreading of an initially localized heat pulse in equilibrium as well as through the system size scaling of the stationary current in non-equilibrium steady state." @default.
- W4384789980 created "2023-07-20" @default.
- W4384789980 creator A5018566359 @default.
- W4384789980 date "2023-07-31" @default.
- W4384789980 modified "2023-10-16" @default.
- W4384789980 title "Super-diffusion and crossover from diffusive to anomalous transport in a one-dimensional system" @default.
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- W4384789980 doi "https://doi.org/10.21468/scipostphys.15.1.038" @default.
- W4384789980 hasPublicationYear "2023" @default.
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