Anharmonicity in nuclear wobbling motion

An unexpected strong anharmonicity was observed in the wobbling spectrum in Lu-163. In an attempt to understand what causes the deviation from the original wobbling model by Bohr and Mottelson, an analysis is presented using several different approaches, such as exact diagonalization, a semiclassical model to deal with anharmonic wobbling motion, and a microscopic method based on the self-consistent cranking calculation.