迷你玻色子星链
Chains of mini-boson stars
摘要：
在本文中，我们重新研究了爱因斯坦引力与自由复杂标量场耦合的模型中的稳态类孤子解，即所谓的小玻色子星。通过数值计算，我们发现除了通常的单个小玻色子星解外，还存在一个新的玻色子星链解族，它是由一些玻色子星沿对称轴组成的。我们显示了两种类型的链，包括偶数的成分和奇数的成分的配置。此外，我们还研究了复标量场频率对ADM质量$M$和$U(1)$标量电荷$Q$的影响。有趣的是，玻色子星链的存在并不需要引入具有自相互作用势的复杂标量场。
英文摘要：
In this paper, we re-investigate the stationary, soliton-like solutions in the model of the Einstein gravity coupled to a free and complex scalar field, which have been known as mini-boson stars. With numerical method, we find that in addition to the usual single mini-boson star solution, there exist a novel family of solutions interpreted as chains of boson stars, which is made of some boson stars along the symmetry axis. We show the configuration of two types of chains, including an even number of constituents and an odd number of constituents. Furthermore, we also study the effect of the frequency of the complex scalar field on the ADM mass $M$ and the $U(1)$ scalar charge $Q$. It is interesting to note that the existence of chains of boson stars does not require the introduction of a complex scalar field with self-interacting potential.
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