21,782 research outputs found
Solving the Nose-Hoover thermostat for Nuclear Pasta
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
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
- …