20,661 research outputs found

    Solving the Nose-Hoover thermostat for Nuclear Pasta

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    In this work we present a calculation of the hamiltonian variables solving the molecular dynamics equations of motion for a system of nuclear matter relevant to the description of nuclear pasta. The temperature is kept fixed by using the Nos\'{e}-Hoover Thermostat and the interaction is modelled via a semiclassical potential depending on both positions and momenta.Comment: 7 pages, 3 figures. Journal of Mathematical Chemistry, in pres

    Matter-wave solitons supported by dissipation

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    We show how novel types of long-lived self-localized matter waves can be constructed with Bose-Einstein condensates. The ingredients leading to such structures are a spatial phase generating a flux of atoms towards the condensate center and the dissipative mechanism provided by the inelastic three-body collisions in atomic Bose-Einstein condensates. The outcome is an striking example of nonlinear structure supported by dissipation
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