DYNAMICS OF MAGNETIC-BUBBLES IN A SKYRME MODEL

The dynamics of magnetic bubbles is studied within a strictly 2D model in which a Skyrme-like term is included to ensure stability. We calcu late the profile of static bubbles with unit winding number and then e xamine two basic dynamical questions. First, we demonstrate that magne tic bubbles exhibit skew deflection in an applied magnetic-field gradi ent where the semi-empirical golden rule of bubble dynamics is verifie d in its gross features but not its finer details. Second, we show tha t two interacting magnetic bubbles with the same winding number orbit around each other while undergoing a mild Larmor precession.