https://doi.org/10.1140/epjc/s10052-019-6638-2
Regular Article - Theoretical Physics
Classical behaviour of Q-balls in the Wick–Cutkosky model
1
Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow, 119991, Russia
2
Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary prospect 7a, Moscow, 117312, Russia
3
Moscow Institute of Physics and Technology, Institutsky per. 9, Dolgoprudny, 141700, Russia
* e-mail: smolyakov@theory.sinp.msu.ru
Received:
10
October
2018
Accepted:
28
January
2019
Published online:
19
February
2019
In this paper, we continue discussing Q-balls in the Wick–Cutkosky model. Despite Q-balls in this model are composed of two scalar fields, they turn out to be very useful and illustrative for examining various important properties of Q-balls. In particular, in the present paper we study in detail (analytically and numerically) the problem of classical stability of Q-balls, including the nonlinear evolution of classically unstable Q-balls, as well as the behaviour of Q-balls in external fields in the non-relativistic limit.
© The Author(s), 2019
