旋转标量场与玻色星的形成
Rotating Scalar Field and Formation of Bose Stars
摘要：
研究了具有有限角动量和自相互作用的玻色暗物质初始云在动力学区域的数值演化。结果表明，这样的系统可以进行引力凝聚，形成玻色星。结果表明，有限角动量的存在或自相互作用的强度对引力凝聚时间有很大的影响。我们发现，在有吸引力或无自相互作用的情况下，没有明显的角动量从初始云转移到形成的恒星。然而，对于排斥相互作用的情况下，我们的结果表明，这样的角动量转移是可能的。这些结果与早期的分析工作一致，其中考虑了旋转玻色子星的稳定性[Dmitriev et al. 2021]。
英文摘要：
We study numerical evolutions of an initial cloud of self-gravitating bosonic dark matter with finite angular momentum and self-interaction in kinetic regime. It is demonstrated that such a system can undergo gravitational condensation and form a Bose star. The results show that the gravitational condensation time is strongly influenced by the presence of finite angular momentum or the strength of self-interaction. We find that in the cases related with attractive or no self-interaction, there is no significant transfer of angular momentum from the initial cloud to the formed star. However, for the case repulsive interaction our results indicate that such a angular-momentum transfer is possible. These results are consistent with the earlier analytical work where the stability of the rotating boson star was considered [Dmitriev et al. 2021].
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