Dynamics of nontopological solitons:: Q balls -: art. no. 085006

被引:76
作者
Axenides, M [1 ]
Komineas, S
Perivolaropoulos, L
Floratos, M
机构
[1] Democritos Natl Res Ctr Phys Sci, Inst Nucl Phys, GR-15310 Athens, Greece
[2] Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany
来源
PHYSICAL REVIEW D | 2000年 / 61卷 / 08期
关键词
D O I
10.1103/PhysRevD.61.085006
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We use numerical simulations and semianalytical methods to investigate the stability and the interactions of nontopological stationary Q ball solutions. In the context of a simple model we map the parameter sectors of stability for a single Q ball and verify the result using numerical simulations of time evolution. The system of two interacting Q balls is also studied in one and two space dimensions. We find that the system generically performs breather-type oscillations with frequency equal to the difference of the internal Q ball frequencies. This result is shown to be consistent with the form of the Q ball interaction potential. Finally we perform simulations of Q ball scattering and show that the right angle scattering effect observed in topological soliton scattering in two dimensions persists also in the case of Q balls where no topologically conserved quantities are present. For relativistic collision velocities the Q ball charge is split into a forward and a right angle scattering component. As the collision velocity increases, the forward component gets amplified at the expense of the right angle component.
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页数:11
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