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 Kinetic models of heterogeneous dissipation


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We suggest kinetic models of dissipation for an ensemble of interacting oriented particles, for example, moving magnetized particles. This is achieved by introducing a double bracket dissipation in kinetic equations using an oriented Poisson bracket, and employing the moment method to derive continuum equations for magnetization and density evolution. We show how our continuum equations generalize the Debye-Hueckel equations for attracting round particles, and Landau-Lifshitz-Gilbert equations for spin waves in magnetized media. We also show formation of singular solutions that are clumps of aligned particles orientons starting from random initial conditions. Finally, we extend our theory to the dissipative motion of self-interacting curves.



Author: Darryl D. Holm; Vakhtang Putkaradze; Cesare Tronci

Source: https://archive.org/







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