https://doi.org/10.1051/epjconf/201819106018
Characteristic modes of vibration of Q-balls
1
Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary prospect 7a, 117312, Moscow, Russia
2
Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudny, Moscow Region 141700, Russia
3
Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
* e-mail: andreykpq@gmail.com
** e-mail: emin@ms2.inr.ac.ru
*** e-mail: andrey.shkerin@epfl.ch 1In case of the local U(1)-invariance, one speaks of “gauged Q-balls” [4, 5].
Published online: 31 October 2018
In this report, based on [1], we study analytically small perturbations of classically stable Q-balls in 3+1 dimensions. Models with flat and polynomial potentials are considered. We find that large Q-balls in the model with the flat potential possess soft modes. We also find a specific mode for Q-balls near the stability bound, which is related to the decay mode of Q-clouds. For these modes, the perturbation theory is applicable with respect to the relative frequency of an excitation.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
