Charged Q-balls and boson stars and dynamics of charged test particles

被引：36

作者：

Brihaye, Yves ^{[1
]}

Diemer, Valeria ^{[2
]}

Hartmann, Betti ^{[3
,4
]}

机构：

[1] Univ Mons, Fac Sci, B-7000 Mons, Belgium

[2] Carl von Ossietzky Univ Oldenburg, Inst Phys, D-26111 Oldenburg, Germany

[3] Jacobs Univ Bremen, Sch Sci & Engn, D-28759 Bremen, Germany

[4] Univ Fed Espirito Santo, Dept Fis, BR-29075910 Vitoria, ES, Brazil

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 08期

关键词：

ROTATING FINITE CLOUD; ANALYTIC SOLUTIONS; CENTRAL OBJECT; ACCRETION; MASS;

D O I：

10.1103/PhysRevD.89.084048

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We construct electrically charged Q-balls and boson stars in a model with a scalar self-interaction potential resulting from gauge mediated supersymmetry breaking. We discuss the properties of these solutions in detail and emphasize the differences to the uncharged case. We observe that Q-balls can only be constructed up to a maximal value of the charge of the scalar field, while for boson stars the interplay between the attractive gravitational force and the repulsive electromagnetic force determines their behavior. We find that the vacuum is stable with respect to pair production in the presence of our charged boson stars. We also study the motion of charged, massive test particles in the space-time of boson stars. We find that in contrast to charged black holes the motion of charged test particles in charged boson star space-times is planar, but that the presence of the scalar field plays a crucial role for the qualitative features of the trajectories. Applications of this test particle motion can be made in the study of extreme-mass ratio inspirals as well as astrophysical plasmas relevant e.g. in the formation of accretion discs and polar jets of compact objects.

引用

页数：19

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