Matches in SemOpenAlex for { <https://semopenalex.org/work/W2776392425> ?p ?o ?g. }
- W2776392425 abstract "We use a semiclassical approach to study out of equilibrium dynamics and transport in quantum systems with massive quasiparticle excitations having internal quantum numbers. In the universal limit of low energy quasiparticles, the system is described in terms of a classical gas of colored hard-core particles. Starting from an inhomogeneous initial state, in this limit we give analytic expressions for the space and time dependent spin density and spin current profiles. Depending on the initial state, the spin transport is found to be ballistic or diffusive. In the ballistic case we identify a `second front' that moves more slowly than the maximal quasiparticle velocity. Our analytic results also capture the diffusive broadening of this ballistically propagating front. To go beyond the universal limit, we study the effect of non-trivial scattering processes in the $O(3)$ non-linear sigma model by performing Monte Carlo simulations, and observe local equilibration around the second front in terms of the densities of the particle species." @default.
- W2776392425 created "2018-01-05" @default.
- W2776392425 creator A5003146029 @default.
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- W2776392425 date "2018-09-04" @default.
- W2776392425 modified "2023-10-05" @default.
- W2776392425 title "Semiclassical theory of front propagation and front equilibration following an inhomogeneous quantum quench" @default.
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- W2776392425 doi "https://doi.org/10.1103/physreve.98.032105" @default.
- W2776392425 hasPublicationYear "2018" @default.
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