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Molecular dynamics of weakly coupled electric dipoles on a rigid lattice. I. The approach to equilibrium

par Kohler, Michel ;Bellemans, André
Référence The Journal of Chemical Physics, 47, 4, page (1261-1265)
Publication Publié, 1967

Article révisé par les pairs

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Résumé :

The approach to equilibrium of a finite two-dimensional system of 400 rotating dipoles located on the sites of a square lattice is investigated by the technique of molecular dynamics. For all dipoles initially oriented at random and rotating in the same direction with equal velocities, it is verified that the system goes to its equilibrium state and that the relaxation time of the fourth moment of the angular momentum distribution is inversely proportional to the eighth power of the dipole moment, as expected from theory. A particular situation, such that the system does not approach its equilibrium state, is discussed.