Q-balls without a potential

被引：25

作者：

Loiko, V. ^{[1
]}

Perapechka, I. ^{[1
]}

Shnir, Ya. ^{[2
]}

机构：

[1] Belarusian State Univ, Dept Theoret Phys & Astrophys, Minsk 220004, BELARUS

[2] JINR, BLTP, Dubna 141980, Moscow Region, Russia

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 04期

关键词：

SOLITON STARS;

D O I：

10.1103/PhysRevD.98.045018

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study nontopological Q-ball solutions of the (3 + 1)-dimensional Friedberg-Lee-Sirlin two-component model. The limiting case of the vanishing potential term yields an example of hairy Q-balls, which possess a long-range massless real field. We discuss the properties of these stationary field configurations and determine their domain of existence. Considering the Friedberg-Lee-Sirlin model, we present numerical evidence for the existence of spinning axially symmetric Q-balls with different parity. A solution of this type exists also in the limiting case of vanishing scalar potential. We find that the hairy Q-balls are classically stable for all range of values of angular frequency.

引用

页数：9